Virtual colonoscopy is a procedure in which a radiologist uses x-rays and a computer to create images of your rectum and colon from outside the body. Virtual colonoscopy can show ulcers, polyps, and cancer. Learn why virtual colonoscopy is used, how to prepare for the procedure, what to expect, and how it's different from colonoscopy.
3D Visualization of Colon and Virtual Colonoscopy
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Virtual Colonoscopy Views
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Virtual Colonoscopy Views
Virtual colonoscopy is a new technology that uses computerized tomography (CT) images to look for polyps and cancer in the colon. The result is a computer-generated, animated, three-dimensional view of the interior of the colon. The preparation for the procedure is similar to that for a colonoscopy, but the procedure itself takes only about 10 minutes, and no sedation is required. If abnormalities are found, a conventional colonoscopy is performed for removal or biopsy of the growth.
Image by TheVisualMD
What Is Virtual Colonoscopy?
Virtual colonoscopy is a procedure in which a radiologist uses x-rays and a computer to create images of your rectum and colon from outside the body. Virtual colonoscopy can show ulcers, polyps, and cancer.
Does virtual colonoscopy have another name?
Virtual colonoscopy is also called computerized tomography (CT) colonography.
How is virtual colonoscopy different from colonoscopy?
Colonoscopy and virtual colonoscopy are different in several ways. Colonoscopy is a procedure in which a trained specialist uses a long, flexible, narrow tube with a light and tiny camera on one end, called a colonoscope or scope, to look inside your rectum and colon. Virtual colonoscopy is an x-ray test, takes less time, and does not require a doctor to insert a scope into the entire length of your colon. Unlike colonoscopy, virtual colonoscopy does not require sedation or anesthesia.
However, virtual colonoscopy may not be as effective as colonoscopy at finding certain polyps. Also, doctors cannot remove polyps or treat certain other problems during virtual colonoscopy, as they can during colonoscopy. Your health insurance coverage for virtual colonoscopy and colonoscopy also may be different.
Source: National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Additional Materials (10)
Three Views of a Virtual Colonoscopy
Virtual colonoscopy is a new technology that uses computerized tomography (CT) images to look for polyps and cancer in the colon. The result is a computer-generated, animated, three-dimensional view of the interior of the colon. The preparation for the procedure is similar to that for a colonoscopy, but the procedure itself takes only about 10 minutes, and no sedation is required. If abnormalities are found, a conventional colonoscopy is performed for removal or biopsy of the growth.
Image by TheVisualMD
Three Views of a Virtual Colonoscopy
Virtual colonoscopy is a new technology that uses computerized tomography (CT) images to look for polyps and cancer in the colon. The result is a computer-generated, animated, three-dimensional view of the interior of the colon. The preparation for the procedure is similar to that for a colonoscopy, but the procedure itself takes only about 10 minutes, and no sedation is required. If abnormalities are found, a conventional colonoscopy is performed for removal or biopsy of the growth.
Image by TheVisualMD
CT colonography of a rectal mass
CT colonography of a rectal mass. Left image is a volume rendering and right image is a thin slice. It also shows the rectal tube used for insufflation of gas to distend the colon.
Original caption: Differentiation from stool and colonic neoplasia by dual-energy CT. Male, 88 years of age. (A,B) denote colonography and CT axial plane image revealed irregular upheaval masses in the posterior wall of the rectum (white arrow). It is difficult to differentiate tumors from stool.
Dual-energy contrast-enhanced CT (axial plane) revealed no enhancement of masses, iodine value = −1.4 mg/ml (white arrow), suggesting no blood supply to the masses, which was validated as stool by colonography.
Image by Kai Sun, Ruijuan Han, Yang Han, Xuesen Shi, Jiang Hu & Bin lu/Wikimedia
This browser does not support the video element.
Patient describing virtual colonoscopy
Virtual colonoscopy is a new technology that uses computed tomography (CT), or, less often, magnetic resonance imaging (MRI) images to look for polyps, cancer, or other diseases of the colon when an abnormality is suspected. A computer program assembles the images to create an animated, three-dimensional view of the interior of the colon. The preparation for the procedure is similar to that for a colonoscopy, but the procedure itself takes only about 10 minutes, and no sedation is required. If abnormalities are found, a conventional colonoscopy will need to be performed for removal or biopsy of the growth.
Video by TheVisualMD
A Colonoscopy Innovation
Video by LivingHealthyChicago/YouTube
Virtual Colonoscopy Q&A | Dr. Karen Horton
Video by Johns Hopkins Medicine/YouTube
All Views
Inside
Outside
Unfurled
1
2
3
4
Virtual Colonoscopy
Virtual colonoscopy is a new technology that uses computerized tomography (CT) images to look for polyps and cancer in the colon. The result is a computer-generated, animated, three-dimensional view of the interior of the colon. The preparation for the procedure is similar to that for a colonoscopy, but the procedure itself takes only about 10 minutes, and no sedation is required. If abnormalities are found, a conventional colonoscopy is performed for removal or biopsy of the growth.
Interactive by TheVisualMD
UCSF Radiology: How is Virtual Colonoscopy Performed?
Video by UCSF Imaging/YouTube
Virtual Colonoscopy-Mayo Clinic
Video by Mayo Clinic/YouTube
Virtual Colonoscopy - Lexington Diagnostic Center
Video by Lexington Diagnostic Center/YouTube
Three Views of a Virtual Colonoscopy
TheVisualMD
Three Views of a Virtual Colonoscopy
TheVisualMD
CT colonography of a rectal mass
Kai Sun, Ruijuan Han, Yang Han, Xuesen Shi, Jiang Hu & Bin lu/Wikimedia
1:09
Patient describing virtual colonoscopy
TheVisualMD
2:45
A Colonoscopy Innovation
LivingHealthyChicago/YouTube
8:26
Virtual Colonoscopy Q&A | Dr. Karen Horton
Johns Hopkins Medicine/YouTube
Virtual Colonoscopy
TheVisualMD
2:33
UCSF Radiology: How is Virtual Colonoscopy Performed?
UCSF Imaging/YouTube
2:19
Virtual Colonoscopy-Mayo Clinic
Mayo Clinic/YouTube
2:24
Virtual Colonoscopy - Lexington Diagnostic Center
Lexington Diagnostic Center/YouTube
Virtual Colonoscopy: A Less Invasive Look
Three Views of a Virtual Colonoscopy
Image by TheVisualMD
Three Views of a Virtual Colonoscopy
Virtual colonoscopy is a new technology that uses computerized tomography (CT) images to look for polyps and cancer in the colon. The result is a computer-generated, animated, three-dimensional view of the interior of the colon. The preparation for the procedure is similar to that for a colonoscopy, but the procedure itself takes only about 10 minutes, and no sedation is required. If abnormalities are found, a conventional colonoscopy is performed for removal or biopsy of the growth.
Image by TheVisualMD
Virtual Colonoscopy: A Less Invasive Look
Virtual colonoscopy is a new technology that uses computed tomography (CT), or, less often, magnetic resonance imaging (MRI) images to look for polyps, cancer, or other diseases of the colon when an abnormality is suspected. A computer program assembles the images to create an animated, three-dimensional view of the interior of the colon. The preparation for the procedure is similar to that for a colonoscopy, but the procedure itself takes only about 10 minutes, and no sedation is required. If abnormalities are found, a conventional colonoscopy will need to be performed for removal or biopsy of the growth.
The CT procedure takes place as follows:
The patient lies face up on a table.
A thin tube is inserted through the anus and into the rectum. Carbon dioxide gas is pumped through the tube to expand the large intestine for better viewing.
The table moves through the CT scanner to produce a series of cross-sectional images of the colon.
At certain times during the procedure, the doctor may ask the patient to hold his or her breath so that the image will be clear.
The procedure is repeated while the patient lies face down.
After the image-taking procedure is complete, the cross-sectional pictures are processed by the computer to create animated, three-dimensional images of the large intestine. They are examined by a radiologist to identify any abnormal growths. If abnormalities are found, then a conventional colonoscopy will need to be performed so that the abnormal growths can be removed or biopsied.
Advantages of virtual colonoscopy:
Virtual colonoscopy is less invasive than conventional colonoscopy and does not require the insertion of a colonoscope into the entire length of the colon.
Virtual colonoscopy takes less time than either conventional colonoscopy or a barium enema. It takes only about 10 minutes to do the exam, and about 15-30 minutes more to read the results.
No sedation is needed. The person having the procedure can return to usual activities or go home afterwards.
Virtual colonoscopy provides clearer, more detailed images than a barium enema.
Virtual colonoscopy can provide images of a colon that is narrowed due to inflammation or the presence of an abnormal growth.
Virtual colonoscopy can discover clinically important problems outside of the colon, such as other cancers and aortic aneurysms. The scan provides data about the entire abdomen and pelvis and the solid organs they contain, including the liver, kidneys, pancreas, and bladder. In men, the prostate can be checked, and in women, the uterus and ovaries.
Disadvantages of virtual colonoscopy:
Like conventional colonoscopy, virtual colonoscopy requires bowel preparation.
The exam is slightly invasive in that a small tube is inserted into the rectum to expand the large intestine.
Virtual colonoscopy does not allow the doctor to remove or biopsy tissue. If something suspicious does turn up during a virtual colonoscopy, then a traditional colonoscopy must be done. The patient must go through another bowel-preparation regimen and another procedure.
Because the virtual colonoscopy provides data about the entire abdomen and pelvis and the solid organs they contain, it may reveal the presence of cysts and other growths. Although these growths may turn out to be harmless, they can lead to further testing, increasing both cost and risk to the patient.
Virtual colonoscopy does not detect precancerous polyps smaller than .4 inches (10 mm).
Medicare and many health insurance plans don't pay for virtual colonoscopy.
Virtual colonoscopies expose the patient to low doses of X-ray radiation.
Virtual colonoscopy is a newer technology and not as widely available as conventional colonoscopy, although this may change.
Source: TheVisualMD
Additional Materials (1)
A Less Invasive Look
Virtual colonoscopy is a new technology that uses computed tomography (CT), or, less often, magnetic resonance imaging (MRI) images to look for polyps, cancer, or other diseases of the colon when an abnormality is suspected. A computer program assembles the images to create an animated, three-dimensional view of the interior of the colon. The preparation for the procedure is similar to that for a colonoscopy, but the procedure itself takes only about 10 minutes, and no sedation is required. If abnormalities are found, a conventional colonoscopy will need to be performed for removal or biopsy of the growth.
Image by TheVisualMD
A Less Invasive Look
TheVisualMD
Virtual Colonoscopy
Virtual Colonoscopy
Also called: CT Colonography, Computed Tomographic Colonography
Virtual colonoscopy is a non-invasive imaging method that uses computed tomographic data combined with specialized imaging software to examine the colon. It produces three-dimensional images of the colon which are examined for colorectal cancer and precancerous polyps.
Virtual Colonoscopy
Also called: CT Colonography, Computed Tomographic Colonography
Virtual colonoscopy is a non-invasive imaging method that uses computed tomographic data combined with specialized imaging software to examine the colon. It produces three-dimensional images of the colon which are examined for colorectal cancer and precancerous polyps.
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Use the slider below to see how your results affect your
health.
Your result is Negative.
No abnormalities were detected in the colon. If you're at average risk of colon cancer, meaning you have no colon cancer risk factors other than age, your doctor may recommend repeating the exam in five years.
Related conditions
A method to examine the inside of the colon by taking a series of x-rays. A computer is used to make 2-dimensional (2-D) and 3-D pictures of the colon from these x-rays. The pictures can be saved, changed to give better viewing angles, and reviewed after the procedure, even years later.
Also called computed tomographic colonography, computed tomography colonography, CT colonography, and CTC.
You may need a virtual colonoscopy to find the cause of unexplained symptoms such as:
Bleeding from your anus (the opening of the rectum through which stool passes out of your body)
Changes in your bowel activity, such as diarrhea
Pain in your abdomen (belly)
Unexplained weight loss
Doctors also use the procedure to screen for colon polyps and cancer. Screening is testing for diseases when you have no symptoms. It may find diseases at an early stage, when they are easier to treat. If aren't at higher risk for colorectal cancer, your health care provider will likely recommend you start getting screenings at age 45. If you at higher risk, you may need to start getting screened for colorectal cancer earlier.
There are also other tests to screen for colorectal cancer, including stool tests. Talk with your provider about which test is right for you and when and how often you should get it.
This is a type of x-ray that uses a CT scan (computed tomography) to take detailed, 3-dimensional pictures of the entire colon and rectum. It is usually done in a radiology department of a hospital or medical center. This procedure also requires bowel prep beforehand. During the test:
You will lie on a narrow table.
You may be asked to drink a liquid containing contrast dye. Contrast dye is a substance that makes parts of your body show up more clearly on an x-ray.
A provider will insert a small tube into the rectum.
Air will be pumped through the tube to make the colon bigger and easier to see.
The table will slide into the CT machine.
A series of images will be taken.
For a virtual colonoscopy, you will need to do a bowel prep. Your provider will give you specific instructions on how to do your bowel prep, but steps for bowel prep may include:
Following a liquid diet for one to three days before the test.
Drinking plenty of clear liquids one to three days before the test. Clear liquids include water, black coffee or tea, fat-free broth, and sports drinks without added color.
Drinking a strong liquid laxative and/or using an enema on the evening before your test.
The laxative or enema will help you empty your bowels. You should prepare to spend a lot of time in the bathroom. Bowel prep can be inconvenient and uncomfortable, but if the colon is not thoroughly cleaned out, your provider may not be able to get a full picture of your colon and rectum. Polyps and other abnormal areas may not be seen.
In a virtual colonoscopy, risks include:
Exposure to a small dose of radiation from the scan.
Rarely, a tear in the colon or rectum can happen when it is inflated with air.
Normal findings are healthy intestinal tissues. Abnormal results may include the following:
Colorectal polyps or abnormal tissue were seen on the CT scan.
You will probably need a traditional colonoscopy so your provider can get a tissue sample. Sometimes this procedure can be done on the same day as your virtual colonoscopy.
If you have questions about your results, talk to your health care provider.
Colorectal Cancer Screening Tests: MedlinePlus Medical Test [accessed on Feb 12, 2024]
Colonoscopy | MedlinePlus. National Library of Medicine. Dec 5, 2022 [accessed on Feb 12, 2024]
Virtual Colonoscopy | NIDDK [accessed on Dec 28, 2018]
Tests to Detect Colorectal Cancer and Polyps - National Cancer Institute [accessed on Dec 28, 2018]
Colorectal Cancer Screening | Cancer Trends Progress Report [accessed on Dec 28, 2018]
CT Colonography [accessed on Dec 28, 2018]
Virtual colonoscopy - Mayo Clinic [accessed on Dec 28, 2018]
Normal reference ranges can vary depending on the laboratory and the method used for testing. You must use the range supplied by the laboratory that performed your test to evaluate whether your results are "within normal limits."
Additional Materials (14)
Virtual Colonoscopy 3D Model
With virtual colonoscopy, a computed tomography scanner takes cross-sectional images of the patient's colon, after the colon has been inflated with gas. A three-dimensional model is then created from the CT slices and evaluated by a radiologist for abnormalities.
Image by TheVisualMD
Virtual Colonoscopy open colon section view
After the image-taking procedure is complete, the cross-sectional pictures are processed by the computer to create animated, three-dimensional images of the large intestine. They are examined by a radiologist to identify any abnormal growths. If abnormalities are found, a conventional colonoscopy will be performed so that the abnormal growths can be removed or biopsied.
Image by TheVisualMD
A Less Invasive Look
Virtual colonoscopy is a new technology that uses computed tomography (CT), or, less often, magnetic resonance imaging (MRI) images to look for polyps, cancer, or other diseases of the colon when an abnormality is suspected. A computer program assembles the images to create an animated, three-dimensional view of the interior of the colon. The preparation for the procedure is similar to that for a colonoscopy, but the procedure itself takes only about 10 minutes, and no sedation is required. If abnormalities are found, a conventional colonoscopy will need to be performed for removal or biopsy of the growth.
Image by TheVisualMD
This browser does not support the video element.
Colon unfurling
Virtual colonoscopy is a new technology that uses computed tomography (CT), or, less often, magnetic resonance imaging (MRI) images to look for polyps, cancer, or other diseases of the colon when an abnormality is suspected. A computer program assembles the images to create an animated, three-dimensional view of the interior of the colon. The preparation for the procedure is similar to that for a colonoscopy, but the procedure itself takes only about 10 minutes, and no sedation is required. If abnormalities are found, a conventional colonoscopy will need to be performed for removal or biopsy of the growth.
Video by TheVisualMD
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Colorectal Cancer Clip 3
Colorectal Cancer Clip 3
Video by TheVisualMD
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Colorectal Cancer Clip 4
Colorectal Cancer Clip 4
Video by TheVisualMD
Spectrum of Medical Imaging
This composite image was created in recognition of The Society of Photo-Optical Instrumentation Engineers (SPIE) designation of 2015 as the “International Year of Light.” Medical imaging scientists and engineers contribute to the quest for the improved human condition by providing imaging that spans the entire usable electro-magnetic spectrum (seen at bottom). From the humblest of beginnings with simple magnification of objects and focusing with lenses, to the biological observation of cells with rudimentary microscopes in the visible spectrum, medical imaging today has both extended away from the visible spectrum towards longer and shorter wavelengths (low and high energies) and exploited the hyperspectral nature of the visible which was once considered “commonplace” or rudimentary. Considering yet a different cross-section through the various imaging modalities across the spectrum, the medically useful information gained spans anatomic, physiologic, and molecular regimes. Systems and algorithms have been developed as single-modality acquisition systems, and also as multiple-modalities with conjoint reconstruction, each informing the other in the quest to optimize image quality and information content. In addition, the role of light-based technologies in enabling advanced computations in tomographic reconstructions, computer-aided diagnosis, machine learning (neural networks, deep learning, etc.) , and 3D visualizations as well as in data-enriched storage of medical images has further extended the potential knowledge “seen” through imaging. The breadth of the electromagnetic spectrum offers limitless opportunities for improvement and inquiry, in our quest to answer human life’s difficult questions. This montage was first published on the cover of the SPIE’s Journal of Medical Imaging (July-Sept. 2015, vol. 3, no. 3) and is but a small tribute to the multitude of medical imaging scientists who have contributed to the wealth of new knowledge as we interrogate the human condition. The gray-scale whole body images (from Left to Right) are acquired from longer wavelength modalities to shorter wavelength modalities spanning the (currently) usable electromagnetic spectrum. The background images include: a coronal Magnetic Resonance Image (MRI) T2 weighted image slice, a posterior surface Infra Red (IR) heat map, a coronal non-contrast Computed Tomography (CT) slice, and a coronal 18F-fluoro-deoxyglucose Positron Emission Tomography (FDG-PET) slice. The selection of color inset images includes (from Top-to-Bottom, then Left to Right): [1] diffusion tensor magnetic resonance imaging (MRI) used to image long white matter tracts within and around the human brain illustrating neuronal connectivity (coloring refers to bluish=vertical direction; green=horizontal A-P direction; red=horizontal lateral direction) (courtesy of Arthur Toga, PhD); [2] registered and superimposed coronal proton-MRI (gray-scale) and a hyper polarized 129Xe ventilation MRI scan (color scale) within the same patient’s lungs, prior to their receiving a bronchial stent (courtesy of Bastiaan Driehuys, PhD); [3] coronal slice through a microwave-based image reconstruction of the Debye parameter ε (epsilon) in a heterogeneously dense human breast phantom (courtesy of Susan Hagness, PhD); [4] juxtaposed optical image of the retina and vertical and horizontal Optical Coherence Tomograph (OCT) slices showing pigmentosa retinopathy (courtesy of Jean-Michel Muratet, MD); [5] functional 3-D photoacoustic imaging of melanoma (gray scale) in vivo, surrounded by highly optically absorptive blood vessels (red) (courtesy of Lihong Wang, PhD); [6] optical micrograph of HeLa cells stained for microtubules (blue) and co-stained with DAPI for actin visualization (red); HeLa cells are the world's first stem cell line, originally derived from the aggressive cervical cancer cells of Henrietta Lacks (courtesy Tom Deerinck/NCMIR); [7] visualization of the pelvis highlighting the colon, which is imaged with contrast x-ray computed tomography (CT), and after digital surface rendering can be used in virtual colonoscopy, thus avoiding a physical visible light-based colonoscopy; [8] registered and fused sagittal 99mTc-sestamibi dedicated molecular single photon emission computed tomography (SPECT, heat color scale) and low-dose CT slice (gray scale) of a patient’s uncompressed, pendant breast containing two surgically confirmed DCIS loci in the posterior breast (courtesy of Martin Tornai, PhD); [9] classic, early x-radiograph of Wilhelm Röntgen’s wife’s hand (adapted from http://en.wikipedia.org/wiki/100_Photographs_that_Changed_the_World); [10] transverse pelvic CT (gray scale) with multiple superimposed simulated x-ray photon radiotherapy beams, and their cumulative 20Gy (red) deposited dose isocontours at the focus of a tumor (courtesy of Paul Read, MD, PhD); [11] false-colored scanning electron micrograph of human immunodeficiency virus (HIV) particles (yellow) infecting a human H9 T-cell (turquoise) (adapted from http://biosingularity.com/category/infection/); [12] transverse 18F-dopa positron emission tomography (PET) slice through a Parkinson patient’s brain showing decreased in vivo quantitative uptake in the right caudate and putamen (courtesy of Christaan Schiepers, MD, PhD); [13] registered and fused transverse head CT (gray scale) and registered superimposed PET image (color) of a patient immediately after radio-therapeutic proton irradiation showing endogenously created 15O-positron emitter (2 min half-life) within the nasopharyngeal tumor focus (courtesy of Kira Grogg, PhD). [14] transverse (long axis) cardiac 99mTc-sestamibi SPECT slice illustrating thinned myocardial apical wall in a procedure performed thousands of times daily around the world (adapted from www.medscape.com). These images are but a small sampling of the breadth of the spectrum of light that is currently being investigated the world over by passionate scientists and engineers on a quest for the betterment of the human condition. All contributors for these images used herein have given their permission for their use, and are graciously thanked.
Image by Martin Tornai
Virtual Colonoscopy: A Kinder Gentler Way to Prevent Colon Cancer
Video by University of California Television (UCTV)/YouTube
Virtual Colonoscopy Q&A | Dr. Karen Horton
Video by Johns Hopkins Medicine/YouTube
All Views
Inside
Outside
Unfurled
1
2
3
4
Virtual Colonoscopy
Virtual colonoscopy is a new technology that uses computerized tomography (CT) images to look for polyps and cancer in the colon. The result is a computer-generated, animated, three-dimensional view of the interior of the colon. The preparation for the procedure is similar to that for a colonoscopy, but the procedure itself takes only about 10 minutes, and no sedation is required. If abnormalities are found, a conventional colonoscopy is performed for removal or biopsy of the growth.
Interactive by TheVisualMD
UCSF Radiology: How is Virtual Colonoscopy Performed?
Video by UCSF Imaging/YouTube
Virtual Colonoscopy - Lexington Diagnostic Center
Video by Lexington Diagnostic Center/YouTube
Virtual Colonoscopy-Mayo Clinic
Video by Mayo Clinic/YouTube
3D Visualization of Colon and Virtual Colonoscopy
3D Visualization of Colon and Virtual Colonoscopy
Image by TheVisualMD
Virtual Colonoscopy 3D Model
TheVisualMD
Virtual Colonoscopy open colon section view
TheVisualMD
A Less Invasive Look
TheVisualMD
0:13
Colon unfurling
TheVisualMD
0:49
Colorectal Cancer Clip 3
TheVisualMD
0:15
Colorectal Cancer Clip 4
TheVisualMD
Spectrum of Medical Imaging
Martin Tornai
1:26:06
Virtual Colonoscopy: A Kinder Gentler Way to Prevent Colon Cancer
University of California Television (UCTV)/YouTube
8:26
Virtual Colonoscopy Q&A | Dr. Karen Horton
Johns Hopkins Medicine/YouTube
Virtual Colonoscopy
TheVisualMD
2:33
UCSF Radiology: How is Virtual Colonoscopy Performed?
UCSF Imaging/YouTube
2:24
Virtual Colonoscopy - Lexington Diagnostic Center
Lexington Diagnostic Center/YouTube
2:19
Virtual Colonoscopy-Mayo Clinic
Mayo Clinic/YouTube
3D Visualization of Colon and Virtual Colonoscopy
TheVisualMD
Colonoscopy
Colonoscopy
Also called: Coloscopy
Colonoscopy is an exam in which a doctor uses a colonoscope, to look inside your rectum and colon. Colonoscopy can show irritated and swollen tissue, ulcers, polyps, and cancer.
Colonoscopy
Also called: Coloscopy
Colonoscopy is an exam in which a doctor uses a colonoscope, to look inside your rectum and colon. Colonoscopy can show irritated and swollen tissue, ulcers, polyps, and cancer.
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Use the slider below to see how your results affect your
health.
Your result is Negative.
Normal findings are healthy intestinal tissues. If no abnormalities are discovered, an adult at average risk of colon cancer is generally advised to have a repeat colonoscopy 10 years until age 75.
Related conditions
Colonoscopy is a exam in which a doctor uses a flexible tube with a camera on one end, called a colonoscope or scope, to look inside your rectum and colon. The rectum and colon make up most of your large intestine.
Colonoscopy can show irritated and swollen tissue, ulcers, polyps, and cancer.
A colonoscopy is used:
to look for early signs of cancer in the colon and rectum. It may be part of a routine screening, which usually starts at age 45.
to look for causes of unexplained changes in bowel habits
to evaluate symptoms like abdominal pain, rectal bleeding, and weight loss
Your doctor can also remove polyps from your colon during the procedure.
You may need a colonoscopy to find the cause of unexplained symptoms such as:
Bleeding from your anus (the opening of the rectum through which stool passes out of your body)
Changes in your bowel activity, such as diarrhea
Pain in your abdomen (belly)
Unexplained weight loss
Doctors also use the procedure to screen for colon polyps and cancer. Screening is testing for diseases when you have no symptoms. It may find diseases at an early stage, when they are easier to treat. If aren't at higher risk for colorectal cancer, your health care provider will likely recommend you start getting screenings at age 45. If you at higher risk, you may need to start getting screened for colorectal cancer earlier.
There are also other tests to screen for colorectal cancer, including stool tests. Talk with your provider about which test is right for you and when and how often you should get it.
This test allows a provider to view your entire colon and rectum. It is often done in an outpatient department of a hospital or medical center. Before the test, you will need to empty out your colon (large bowel) in a procedure called bowel prep. During the test:
You will lie on an exam table.
You will be given medicine called a sedative to help you relax. It also prevents you from feeling pain during the procedure. You may be awake for the test, but you probably won't remember anything.
A colonoscope, a thin, lighted tube with a camera attached, will be inserted into your rectum and up into your colon.
Your provider will look for colorectal polyps or other abnormal areas.
Your provider may remove polyps or tissue samples using special tools inserted through the scope.
Polyps or samples may be sent to a lab for testing.
The sedative you are given may make you drowsy for several hours. You should arrange for someone to drive you home.
For a colonoscopy, you will need to do a bowel prep. Your provider will give you specific instructions on how to do your bowel prep, but steps for bowel prep may include:
Following a liquid diet for one to three days before the test.
Drinking plenty of clear liquids one to three days before the test. Clear liquids include water, black coffee or tea, fat-free broth, and sports drinks without added color.
Drinking a strong liquid laxative and/or using an enema on the evening before your test.
The laxative or enema will help you empty your bowels. You should prepare to spend a lot of time in the bathroom. Bowel prep can be inconvenient and uncomfortable, but if the colon is not thoroughly cleaned out, your provider may not be able to get a full picture of your colon and rectum. Polyps and other abnormal areas may not be seen.
Serious risks of colonoscopy are rare but can include:
Tears in the colon or rectum wall
Bleeding
Reaction to the sedative
Normal findings are healthy intestinal tissues. Abnormal results may include the following:
Colorectal polyps or abnormal tissue were found and removed.
Samples were sent to a lab for testing.
Most polyps aren't cancerous but can turn into cancer if not removed. Depending on the size and number of polyps, your provider may recommend more frequent colonoscopies.
If you have questions about your results, talk to your health care provider.
You may feel cramping in your abdomen or bloating during the first hour after the colonoscopy. If the doctor removed polyps or performed a biopsy, you may have light bleeding from your anus. This bleeding is normal.
Colorectal Cancer Screening Tests: MedlinePlus Medical Test [accessed on Feb 10, 2024]
Colonoscopy - NIDDK. National Institute of Diabetes and Digestive and Kidney Diseases. Feb 10, 2024 [accessed on Feb 10, 2024]
Colonoscopy | MedlinePlus. National Library of Medicine. Dec 5, 2022 [accessed on Feb 10, 2024]
Colonoscopy: MedlinePlus Medical Encyclopedia [accessed on Feb 10, 2024]
Robert H. Shmerling, MD. Understanding the results of your colonoscopy - Harvard Health. Oct 14, 2020 [accessed on Feb 10, 2024]
Normal reference ranges can vary depending on the laboratory and the method used for testing. You must use the range supplied by the laboratory that performed your test to evaluate whether your results are "within normal limits."
Additional Materials (40)
This browser does not support the video element.
Colorectal Cancer Clip 6
Colorectal Cancer Clip 6
Video by TheVisualMD
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Colorectal Cancer Clip 4
Colorectal Cancer Clip 4
Video by TheVisualMD
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Colorectal Cancer Clip 3
Colorectal Cancer Clip 3
Video by TheVisualMD
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Colorectal Cancer Screening
Colorectal cancer is one of the few preventable forms of cancer thanks to effective screening. For many people, screening for colorectal cancer is an unpleasant thought, but knowing your options and taking a pro-active approach especially if you're over 50 can save your life. In this video, you can learn the "ins and outs" of colonoscopy, as well as learn about a new technique called virtual colonoscopy, which uses high-tech CT scans to screen the colon.
Video by TheVisualMD
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Colorectal Cancer Screening & Diagnosis
Colorectal cancer includes cancer of both the colon and rectum. It is the fourth most common cancer in the United States and the second leading cause of cancer-related deaths affecting both men and women equally. The CDC recommends that everyone age 50 or over be screened. When diagnosed early, patients have a 90% 5-year survival rate.
Video by TheVisualMD
Preparing for a Colonoscopy
Video by Dartmouth-Hitchcock/YouTube
Why No One Should Be Afraid of a Colonoscopy
Video by Stanford Health Care/YouTube
What are Colonoscopy Risks? • Risks of Colonoscopy | Colonoscopy Center of Excellence
Video by La Peer/YouTube
Having a colonoscopy
Video by Cancer Research UK/YouTube
The Importance of Good Bowel Preparation During Colonoscopy
Video by Johns Hopkins Medicine/YouTube
What is a colonoscopy and how do I prepare for it?
Video by You and Colonoscopy/YouTube
Virtual Colonoscopy Q&A | Dr. Karen Horton
Video by Johns Hopkins Medicine/YouTube
What to expect during a colonoscopy
Video by MD Anderson Cancer Center/YouTube
6 Reasons to Get a Colonoscopy
Video by Cleveland Clinic/YouTube
Colonoscopy Video Tour: Removal of a Colon Polyp (Polypectomy)
Video by AmCollege Gastro/YouTube
What happens during and after a colonoscopy?
Video by You and Colonoscopy/YouTube
How to prepare for a colonoscopy
Video by MD Anderson Cancer Center/YouTube
Colonoscopy and Flexible Sigmoidoscopy
Video by Gastro Pros/YouTube
Virtual Colonoscopy: A Kinder Gentler Way to Prevent Colon Cancer
Video by University of California Television (UCTV)/YouTube
Screening for Colorectal Cancer
Video by Dartmouth-Hitchcock/YouTube
What is Colorectal Cancer?
Video by Stanford Health Care/YouTube
Rectal Cancer | Q&A
Video by Johns Hopkins Medicine/YouTube
5 Things to Know About Colonoscopy - The Nebraska Medical Center
Video by Nebraska Medicine Nebraska Medical Center/YouTube
Video by PreOp.com Patient Engagement - Patient Education/YouTube
UCSF Radiology: How is Virtual Colonoscopy Performed?
Video by UCSF Imaging/YouTube
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Diagram showing a colonoscopy
Diagram showing a colonoscopy.
Image by Cancer Research UK / Wikimedia Commons
Virtual Colonoscopy 3D Model
With virtual colonoscopy, a computed tomography scanner takes cross-sectional images of the patient's colon, after the colon has been inflated with gas. A three-dimensional model is then created from the CT slices and evaluated by a radiologist for abnormalities.
Image by TheVisualMD
Virtual Colonoscopy Slice of CT Data
Virtual colonoscopy is a new imaging technology that uses computed tomography (CT) images to look for polyps and cancer in the colon. A computed tomography scanner takes cross-sectional images of the patient's colon, after the colon has been inflated with gas. A three-dimensional model is created from the CT slices and evaluated by a radiologist for abnormalities.
Image by TheVisualMD
Colonoscopy or sigmoidoscopy testing
Drawing of a woman being tested for colon polyps. The woman is lying on her left side with her head on a pillow. In the background is a TV screen showing images of the colon.
Image by NIDDK Image Library
Colorectal Cancer Types of Surgery
Surgery is the main treatment for colorectal cancer. Polyps and very early stage cancers (Stage 0 and some early Stage I tumors) can be removed during a colonoscopy, using a variety of techniques. In late Stage I and in Stage II and III cancer, the cancerous part of the colon is removed surgically. The surgeon may perform a resection, consisting of a partial colectomy (removing the cancer and a small amount of healthy tissue around it) and an anastomosis (sewing the parts of the colon back together). Nearby lymph nodes may also be removed and biopsied. If it isn't possible to perform a resection (for instance, if the cancer is at the outlet of the rectum), a colostomy may be performed. In a colostomy, a portion of the large intestine is brought through the abdominal wall to carry stool out of the body, where it empties into a special bag. The colostomy may be temporary in order to allow the colon or rectum time to heal after surgery, or it may be permanent.
Image by TheVisualMD
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Capsule endoscopy
Image of the colon acquired by capsule endoscopy
Image by Dr.HH.Krause
All Views
Inside
Outside
Unfurled
1
2
3
4
Virtual Colonoscopy
Virtual colonoscopy is a new technology that uses computerized tomography (CT) images to look for polyps and cancer in the colon. The result is a computer-generated, animated, three-dimensional view of the interior of the colon. The preparation for the procedure is similar to that for a colonoscopy, but the procedure itself takes only about 10 minutes, and no sedation is required. If abnormalities are found, a conventional colonoscopy is performed for removal or biopsy of the growth.
Interactive by TheVisualMD
Virtual Colonoscopy open colon section view
After the image-taking procedure is complete, the cross-sectional pictures are processed by the computer to create animated, three-dimensional images of the large intestine. They are examined by a radiologist to identify any abnormal growths. If abnormalities are found, a conventional colonoscopy will be performed so that the abnormal growths can be removed or biopsied.
Image by TheVisualMD
Screening and Diagnosis Colonoscopy
A colonoscopy is an examination of the interior of the colon. It is often used as a screening tool for early detection of colorectal cancer. During a colonoscopy, a long flexible tube with a video camera at one end, called a colonoscope, is inserted first into the anus and then into the colon. The doctor can view the inside of the colon along its entire length on a video monitor.
Image by TheVisualMD
A Less Invasive Look
Virtual colonoscopy is a new technology that uses computed tomography (CT), or, less often, magnetic resonance imaging (MRI) images to look for polyps, cancer, or other diseases of the colon when an abnormality is suspected. A computer program assembles the images to create an animated, three-dimensional view of the interior of the colon. The preparation for the procedure is similar to that for a colonoscopy, but the procedure itself takes only about 10 minutes, and no sedation is required. If abnormalities are found, a conventional colonoscopy will need to be performed for removal or biopsy of the growth.
Image by TheVisualMD
Screening and Diagnosis Colonoscope
A colonoscopy is an examination of the interior of the colon. It is often used as a screening tool for early detection of colorectal cancer. During a colonoscopy, a long flexible tube with a video camera at one end, called a colonoscope, is inserted first into the anus and then into the colon. The doctor can view the inside of the colon along its entire length on a video monitor.
Image by TheVisualMD
Capsule endoscopy
Picture of a capsule
Image by Euchiasmus
Preparing for a colonoscopy
Video by AmerGastroAssn/YouTube
0:05
Colorectal Cancer Clip 6
TheVisualMD
0:15
Colorectal Cancer Clip 4
TheVisualMD
0:49
Colorectal Cancer Clip 3
TheVisualMD
4:13
Colorectal Cancer Screening
TheVisualMD
4:12
Colorectal Cancer Screening & Diagnosis
TheVisualMD
14:55
Preparing for a Colonoscopy
Dartmouth-Hitchcock/YouTube
3:35
Why No One Should Be Afraid of a Colonoscopy
Stanford Health Care/YouTube
2:56
What are Colonoscopy Risks? • Risks of Colonoscopy | Colonoscopy Center of Excellence
La Peer/YouTube
1:37
Having a colonoscopy
Cancer Research UK/YouTube
1:23
The Importance of Good Bowel Preparation During Colonoscopy
Johns Hopkins Medicine/YouTube
6:30
What is a colonoscopy and how do I prepare for it?
You and Colonoscopy/YouTube
8:26
Virtual Colonoscopy Q&A | Dr. Karen Horton
Johns Hopkins Medicine/YouTube
1:16
What to expect during a colonoscopy
MD Anderson Cancer Center/YouTube
3:17
6 Reasons to Get a Colonoscopy
Cleveland Clinic/YouTube
2:45
Colonoscopy Video Tour: Removal of a Colon Polyp (Polypectomy)
AmCollege Gastro/YouTube
5:15
What happens during and after a colonoscopy?
You and Colonoscopy/YouTube
8:08
How to prepare for a colonoscopy
MD Anderson Cancer Center/YouTube
2:49
Colonoscopy and Flexible Sigmoidoscopy
Gastro Pros/YouTube
1:26:06
Virtual Colonoscopy: A Kinder Gentler Way to Prevent Colon Cancer
University of California Television (UCTV)/YouTube
4:06
Screening for Colorectal Cancer
Dartmouth-Hitchcock/YouTube
3:47
What is Colorectal Cancer?
Stanford Health Care/YouTube
8:46
Rectal Cancer | Q&A
Johns Hopkins Medicine/YouTube
4:18
5 Things to Know About Colonoscopy - The Nebraska Medical Center
UCSF Radiology: How is Virtual Colonoscopy Performed?
UCSF Imaging/YouTube
Sensitive content
This media may include sensitive content
Diagram showing a colonoscopy
Cancer Research UK / Wikimedia Commons
Virtual Colonoscopy 3D Model
TheVisualMD
Virtual Colonoscopy Slice of CT Data
TheVisualMD
Colonoscopy or sigmoidoscopy testing
NIDDK Image Library
Colorectal Cancer Types of Surgery
TheVisualMD
Sensitive content
This media may include sensitive content
Capsule endoscopy
Dr.HH.Krause
Virtual Colonoscopy
TheVisualMD
Virtual Colonoscopy open colon section view
TheVisualMD
Screening and Diagnosis Colonoscopy
TheVisualMD
A Less Invasive Look
TheVisualMD
Screening and Diagnosis Colonoscope
TheVisualMD
Capsule endoscopy
Euchiasmus
1:15
Preparing for a colonoscopy
AmerGastroAssn/YouTube
Who Needs It
Three Views of a Virtual Colonoscopy
Image by TheVisualMD
Three Views of a Virtual Colonoscopy
Virtual colonoscopy is a new technology that uses computerized tomography (CT) images to look for polyps and cancer in the colon. The result is a computer-generated, animated, three-dimensional view of the interior of the colon. The preparation for the procedure is similar to that for a colonoscopy, but the procedure itself takes only about 10 minutes, and no sedation is required. If abnormalities are found, a conventional colonoscopy is performed for removal or biopsy of the growth.
Image by TheVisualMD
Why Do Doctors Use Virtual Colonoscopy?
Doctors mainly use virtual colonoscopy to screen for polyps or cancer. Screening may find diseases at an early stage, when a doctor has a better chance of curing the disease.
Occasionally, doctors may use virtual colonoscopy when colonoscopy is incomplete or not possible due to other medical reasons.
Screening for colon and rectal cancer
Your doctor will recommend screening for colon and rectal cancer at age 45 if you don’t have health problems or other factors that make you more likely to develop colon cancer.
Factors that make you more likely to develop colorectal cancer include
someone in your family has had polyps or cancer of the colon or rectum
a personal history of inflammatory bowel disease, such as ulcerative colitis or Crohn’s disease
other factors, such as if you weigh too much or smoke cigarettes
If you are more likely to develop colorectal cancer, your doctor may recommend screening at a younger age, and you may need to be tested more often.
If you are older than age 75, talk with your doctor about whether you should be screened. For more information, read the current colorectal cancer screening guidelines from the USPSTF.
Government health insurance plans, such as Medicare, and private health insurance plans sometimes change whether and how often they pay for cancer screening tests. Check with your insurance plan to find out if and how often your insurance will cover a screening virtual colonoscopy.
Visit the National Cancer Institute’s website to learn more about colon and rectal cancer.
Source: National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
How to Prepare
Tillman 1
Image by Tillmangrading/Wikimedia
Tillman 1
Tillman 1. No stool burden. This is seen in patients undergoing CT Colonography.
Image by Tillmangrading/Wikimedia
How Do I Prepare for a Virtual Colonoscopy?
To prepare for a virtual colonoscopy, you will need to talk with your doctor, change your diet, clean out your bowel, and drink a special liquid called contrast medium. The contrast medium makes your rectum and colon easier to see in the x-rays.
Talk with your doctor
You should talk with your doctor about any medical conditions you have and all prescribed and over-the-counter medicines, vitamins, and supplements you take, including
arthritis medicines
aspirin or medicines that contain aspirin
blood thinners
diabetes medicines
nonsteroidal anti-inflammatory drugs, such as ibuprofen or naproxen
vitamins that contain iron or iron supplements
X-rays may interfere with personal medical devices. Tell your doctor if you have any implanted medical devices, such as a pacemaker.
Talk with your doctor before your virtual colonoscopy.
Doctors don’t recommend x-rays for pregnant women because x-rays may harm the fetus. Tell your doctor if you are, or may be, pregnant. Your doctor may suggest a different procedure, such as a colonoscopy.
Change your diet and clean out your bowel
As in colonoscopy, a health care professional will give you written bowel prep instructions to follow at home before the procedure. A health care professional orders a bowel prep so that little or no stool is present in your intestine. A complete bowel prep lets you pass stool that is clear and liquid. Stool inside your colon can prevent the x-ray machine from taking clear images of the lining of your intestine.
You may need to follow a clear liquid diet the day before the procedure. The instructions will provide specific direction about when to start and stop the clear liquid diet. In most cases, you may drink or eat the following:
fat-free bouillon or broth
gelatin in flavors such as lemon, lime, or orange
plain coffee or tea, without cream or milk
sports drinks in such flavors as lemon, lime, or orange
strained fruit juice, such as apple or white grape—doctors recommend avoiding orange juice and red or purple beverages
water
Your doctor will tell you how long before the procedure you should have nothing by mouth.
A health care professional will ask you to follow the directions for a bowel prep before the procedure. The bowel prep will cause diarrhea, so you should stay close to a bathroom.
Different bowel preps may contain different combinations of laxatives—pills that you swallow or powders that you dissolve in water and other clear liquids, and enemas. Some people will need to drink a large amount, often a gallon, of liquid laxative over a scheduled amount of time—most often the night before the procedure.
You may find this part of the bowel prep difficult; however, completing the prep is very important. The images will not be clear if the prep is incomplete.
Drink contrast medium
The night before the procedure, you will drink a contrast medium. Contrast medium is visible on x-rays and can help your doctor tell the difference between stool and polyps.
Source: National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Additional Materials (4)
Preparing for a Colonoscopy
Video by Dartmouth-Hitchcock/YouTube
Drug for Whole bowel irrigation
Drug for Whole bowel irrigation, Leftside "SCRIT".Right side "Niflec". The main components of both products are Anhydrous Sodium Sulfate, etc. Contains a small amount of PEG. Products manufactured and distributed in Japan.
Image by melvil/Wikimedia
Virtual Colonoscopy: A Kinder Gentler Way to Prevent Colon Cancer
Video by University of California Television (UCTV)/YouTube
Having a colonoscopy
Video by Cancer Research UK/YouTube
14:55
Preparing for a Colonoscopy
Dartmouth-Hitchcock/YouTube
Drug for Whole bowel irrigation
melvil/Wikimedia
1:26:06
Virtual Colonoscopy: A Kinder Gentler Way to Prevent Colon Cancer
University of California Television (UCTV)/YouTube
1:37
Having a colonoscopy
Cancer Research UK/YouTube
What to Expect
Virtual Colonoscopy 3D Model
Image by TheVisualMD
Virtual Colonoscopy 3D Model
With virtual colonoscopy, a computed tomography scanner takes cross-sectional images of the patient's colon, after the colon has been inflated with gas. A three-dimensional model is then created from the CT slices and evaluated by a radiologist for abnormalities.
Image by TheVisualMD
How Do Health Care Professionals Perform a Virtual Colonoscopy?
A specially trained x-ray technician performs a virtual colonoscopy at an outpatient center or a hospital. You do not need anesthesia.
For the procedure, you will lie on a table while the technician inserts a thin tube through your anus and into your rectum. The tube inflates your large intestine with air for a better view. The table slides into a tunnel-shaped device where the technician takes the x-ray images. The technician may ask you to hold your breath several times during the procedure to steady the images. The technician will ask you to turn over on your side or stomach so he or she can take different images of the large intestine. The procedure lasts about 10 to 15 minutes.
You will lie on a table that slides into a tunnel-shaped device for the x-ray.
Source: National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Additional Materials (6)
Patient describing virtual colonoscopy
Patient describing virtual colonoscopy
Image by TheVisualMD
This browser does not support the video element.
Patient describing virtual colonoscopy
Virtual colonoscopy is a new technology that uses computed tomography (CT), or, less often, magnetic resonance imaging (MRI) images to look for polyps, cancer, or other diseases of the colon when an abnormality is suspected. A computer program assembles the images to create an animated, three-dimensional view of the interior of the colon. The preparation for the procedure is similar to that for a colonoscopy, but the procedure itself takes only about 10 minutes, and no sedation is required. If abnormalities are found, a conventional colonoscopy will need to be performed for removal or biopsy of the growth.
Video by TheVisualMD
Virtual Colonoscopy-Mayo Clinic
Video by Mayo Clinic/YouTube
UCSF Radiology: How is Virtual Colonoscopy Performed?
Video by UCSF Imaging/YouTube
This browser does not support the video element.
Colorectal Cancer Clip 4
Colorectal Cancer Clip 4
Video by TheVisualMD
This browser does not support the video element.
Colon unfurling
Virtual colonoscopy is a new technology that uses computed tomography (CT), or, less often, magnetic resonance imaging (MRI) images to look for polyps, cancer, or other diseases of the colon when an abnormality is suspected. A computer program assembles the images to create an animated, three-dimensional view of the interior of the colon. The preparation for the procedure is similar to that for a colonoscopy, but the procedure itself takes only about 10 minutes, and no sedation is required. If abnormalities are found, a conventional colonoscopy will need to be performed for removal or biopsy of the growth.
Video by TheVisualMD
Patient describing virtual colonoscopy
TheVisualMD
1:09
Patient describing virtual colonoscopy
TheVisualMD
2:19
Virtual Colonoscopy-Mayo Clinic
Mayo Clinic/YouTube
2:33
UCSF Radiology: How is Virtual Colonoscopy Performed?
UCSF Imaging/YouTube
0:15
Colorectal Cancer Clip 4
TheVisualMD
0:13
Colon unfurling
TheVisualMD
Recovery After
Screening & Diagnosis
Image by TheVisualMD
Screening & Diagnosis
Image by TheVisualMD
What Should I Expect After a Virtual Colonoscopy?
After a virtual colonoscopy, you can expect to
feel cramping or bloating during the first hour after the test
resume your regular activities right after the test
return to a normal diet
After the test, a radiologist looks at the images to find any problems and sends a report to your doctor. If the radiologist finds problems, your doctor may perform a colonoscopy the same day or at a later time.
Source: National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Additional Materials (2)
Virtual Colonoscopy open colon section view
After the image-taking procedure is complete, the cross-sectional pictures are processed by the computer to create animated, three-dimensional images of the large intestine. They are examined by a radiologist to identify any abnormal growths. If abnormalities are found, a conventional colonoscopy will be performed so that the abnormal growths can be removed or biopsied.
Image by TheVisualMD
Mediterranean diet foods
Image by G.steph.rocket/Wikimedia
Virtual Colonoscopy open colon section view
TheVisualMD
Mediterranean diet foods
G.steph.rocket/Wikimedia
Possible Risks
Man Experiencing Abdominal Pain with visible anatomy
Image by TheVisualMD
Man Experiencing Abdominal Pain with visible anatomy
A man is hunched over with abdominal pain, gripping his belly.
Image by TheVisualMD
What Are the Risks of a Virtual Colonoscopy?
Inflating the colon with air has a small risk of perforating the lining of the large intestine. The doctor may need to treat perforation with surgery.
Seek care right away
If you have any of the following symptoms after a virtual colonoscopy, you should seek medical attention right away:
severe pain in your abdomen
fever
bloody bowel movements or bleeding from your anus
dizziness
weakness
Source: National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Additional Materials (3)
Abdominal Pain
Republic of Singapore Navy Maj. Boon Hor Ho examines a local man suffering from abdominal pain during a Pacific Partnership 2009 medical civic action project at Niu'ui Hospital. This year Pacific Partnership will travel to Oceania, including Kiribati, Republic of the Marshall Islands, Samoa, Solomon Islands and Tonga. The Military Sealift Command dry cargo/ammunition ship USNS Richard E. Byrd (T-AKE 4) serves as the enabling platform for Pacific Partnership. (U.S. Navy photo by Mass Communication Specialist 2nd Class Joshua Valcarcel/Released)
Image by U.S. Navy photo by Mass Communication Specialist 2nd Class Joshua Valcarcel
abdominal pain
Image by abdominal pain By ProSymbols, US
Abdomen and Pelvic pain
Abdomen and Pelvic pain
Image by Alicia Harper
Abdominal Pain
U.S. Navy photo by Mass Communication Specialist 2nd Class Joshua Valcarcel
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Virtual Colonoscopy
Virtual colonoscopy is a procedure in which a radiologist uses x-rays and a computer to create images of your rectum and colon from outside the body. Virtual colonoscopy can show ulcers, polyps, and cancer. Learn why virtual colonoscopy is used, how to prepare for the procedure, what to expect, and how it's different from colonoscopy.