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Doctor insights on: Colon Scan Vs Colonoscopy

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Comparison of diagnosis colorectal cancer between ctscan and barium enema?

Comparison of diagnosis colorectal cancer between ctscan and barium enema?

Depends on size: Can see the blood supply of tumour mass on a cat scan.. But small polyps do not show... Be does not see polyps, but does see tumour.. Colonoscopy with a perfect prep is the gold standard for large and small. ...Read more

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Dr. Herman Hammerstead
13 doctors shared insights

Colon (Definition)

The colon is another term for the large intestine. This is the final portion of the digestive system, responsible for absorbing water and storing stool before evacuation. It is divided into sections described as cecum; ascending, transverse, descending and ...Read more


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Abdominal cat scan show colon cancer?

Abdominal cat scan show colon cancer?

Unreliable: Specialized cts that are designed to identify colon cancers (ct colonography) are available, but require a specific bowel prep and regimen to be effective. Routine ct scans will miss many small colon cancers that colonoscopy will find--colonoscopy remains the gold-standard. ...Read more

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Can an abdominal/pelvic CT scan incidentally detect colon cancer or polyps?

Can an abdominal/pelvic CT scan incidentally detect colon cancer or polyps?

Incidental: An abdominal ct scan may incidentally demonstrate the suspicion of a fairly large colon cancer but not small lesions or polyps. A conclusive diagnosis of colon cancer requires a tissue diagnosis by biopsy. ...Read more

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Can an abdominal/pelvic CT scan show colon polyps or cancer?

Can an abdominal/pelvic CT scan show colon polyps or cancer?

CT Scan Findings: Ct scan is not the best study to detect colon cancer. Although a ct scan may show a large sized colon cancer, the sensitivity of this is greatly reduced without the administration of oral contrast. The best diagnostic study for colon cancer or polyps is colonoscopy. ...Read more

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What is the risk of bowel perforation from CT colonography "virtual colonoscopy"??

What is the risk of bowel perforation from CT colonography "virtual colonoscopy"??

Not invasive.: A traditional colonoscopy is invasive; the fiber optic camera is passed through the colon, and therein causes the low risk of perforation of the colon. A CT colonography is not invasive; it's just a fancier CT scan, so there's nothing to directly cause a perforation. ...Read more

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Can an abdominal CT scan find colon cancer?

Can an abdominal CT scan find colon cancer?

Check out website : Sometimes a ct scan can pick it up but a colonoscopy is the best initial test. Please check out www.Michaelsmission.Org it is a very informative website about colorectal cancer. ...Read more

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Friend had ct scan with rectal contrast. Diverticulosis without hemmorage sigmoid mural abscess bowel thickening. Surgery? No symptoms heart patient.

Friend had ct scan with rectal contrast. Diverticulosis without hemmorage sigmoid mural abscess bowel thickening. Surgery? No symptoms heart patient.

Possibly: From what you describe, it sounds like surgery is a good option. If this is the first episode of diverticulitis, then the doctor may give antibiotics a try and determine later if surgery is required. Usually surgery is needed at some point. ...Read more

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Does a CT scan detects colon cancer? Or colonoscopy should be done?

Does a CT scan detects colon cancer? Or colonoscopy should be done?

?Early detection tes: CT scan is not a good Test for early detection of Colon Cancer, so Colonoscopy is the preferred test because it accomplishes 2 objectives...detect polyps/precursors of colon cancer and remove them at the same time which eliminates the risk of Polyps changing into cancer. If you have difficulty with having Colonoscopy, then you should ask your doctor to suggest some alternative tests for checking. ...Read more

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Can normal CT scan, stool and blood tests, colonoscopy, gallblader us and hida scan, upper endoscopy (gerd, gastritis) rule out pancreatic cancer?

Can normal CT scan, stool and blood tests, colonoscopy, gallblader us and hida scan, upper endoscopy (gerd, gastritis) rule out pancreatic cancer?

Only one of those : Most of those tests won't tell you anything about pancreas. Only one is ct scan.A perfectly normal ct with IV contrast goes a long way in saying you have a normal pancreas.Mri might give more info but not usually a screening test. ...Read more

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Would advanced colon cancer show up on a CT scan of my abdomen ? Reg CT scan not virtual colonoscopy.

Would advanced colon cancer show up on a CT scan of my abdomen ? Reg CT scan not virtual colonoscopy.

Imaging/biopsy: The imaging modality of ct scan could show findings that would be concerning for cancer, mass around your colon, enlarged lymph nodes in the same area. However, the diagnosis is made at biopsy, a piece of the mass under the microscope of a pathologist. Often the ct scan leads to the biopsy. Good luck, it is important to get the evaluation completed. ...Read more

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Can ibs, ibd or ulcerative colitis be diagnosed by contrast iv, oral contrast and rectal contrast ct scan?

Can ibs, ibd or ulcerative colitis be diagnosed by contrast iv, oral contrast and rectal contrast ct scan?

IBS vs IBD: IBS does not really have any diagnostic test, it is diagnosed clinically after ruling out the other causes. IBD like Crohn's and Ulcerative colitis may show some findings in the GI tract on imaging studies. ...Read more

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Would colon cancer or rectal cancer show up on an abdominal CAT scan?

Would colon cancer or rectal cancer show up on an abdominal CAT scan?

Potentially: it could show up on CT if large enough, but small tumors may not be visualized. ...Read more

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Narrow stools, 4 CT over three years, sigmoidoscopy normal, diverticulosis seen on CT scan. Chance of colon cancer?? Currently pregnant

Narrow stools, 4 CT over three years,  sigmoidoscopy normal, diverticulosis seen on CT  scan. Chance of colon cancer?? Currently pregnant

Narrow stools: Narrow stools are not necessarily a sign of colon cancer and nay be seen with scarring of the colon from prior episodes of diverticulitis. A negative sigmoidoscopy is reassuring in making cancer unlikely but a gastroenterologist is best qualified to evaluate and advise you. ...Read more

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Is it possible to miss diverticulosis on ct and colonoscopy?Post scope ct shows Diverticulosis.Ct and scope prior no Diverticulosis.Pain since scope.

YES: Some diverticula(e) are VERY small and when these little "bubbles" are filled with normal bowel mucous can be missed by both tests...SIGNIFICANT or INFLAMMED diverticulae will NOT be missed by either test... Hope this is helpful Dr Z ...Read more

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Ct scan showed diverticulitis and sigmoid colon iflamation i'm freaking out the discharge paper said diverticulitis posible colitis and ibd?

Ct  scan showed diverticulitis and sigmoid colon iflamation i'm freaking out the discharge paper said diverticulitis posible colitis and ibd?

Unusual: At your age, and common with aging. You must be symptomatic if you are getting studied. Diverticula, diverticulosis, then irritation called diverticulitis. Your doctor will make dietary recommendations, and you may need colonoscopy to be sure no other issues. ...Read more

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Would colon cancer show up in a abdominal CT scan ?

Would colon cancer show up in a abdominal CT scan ?

Sometimes: On regular ct. Seen better on ct colonography. See radiologyinfo.Org. ...Read more

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First ct scan diverticulitis thought he had fistula. Second Ct scan radiologist said no fistula bowel thickening maybe sigmoid abscess ct be wrong?

First ct scan diverticulitis thought he had fistula. Second Ct scan radiologist said no fistula bowel thickening maybe sigmoid abscess  ct be wrong?

Not necessarily: The interpretation of the same ct scan can be changed according to the clinical picture. The clinical picture has support the ct scan and until it would the reading of the ct scan can change. So, it is a fluid situation , it is not rigid. Reading of the ct has to match the clinical condition of the person. I hope this helps. ...Read more

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Can abdominal CT with IV contrast show colorectal cancer ?

Can abdominal CT with IV contrast show colorectal cancer ?

Sometime: Unfortunately the exam you mention only discloses larger tumors. A "Vitrual colonoscopy" is a more sensitive test. It involves a preparation of the bowel . The "gold standard" is, of course a colonoscopy by a Gastroenterologist, you are too young to require this on a "routine basis" Do you have symptoms???? Hope this helps Dr Z ...Read more

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Dr. Charles Cattano
2,056 doctors shared insights

Colonoscopy (Definition)

Colonoscopy is the procedure of using a long flexible camera to visualize the entire colon from the inside with the option to take pictures, video, perform biopsies, remove polyps, etc. Generally people are sedated and do ...Read more


Dr. Rick Koch
12 doctors shared insights

Colonic (Definition)

This is a combining term referring to some condition, treatment or disease of the colon. Such as colonic enema, colonic ...Read more