A member asked:

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

7 doctors weighed in across 4 answers
Dr. Mark Hoepfner answered

Specializes in Surgery

A ct scan does not evaluate colon cancer very well. If there is "advanced" cancer as you asked, possibly a large colon mass could be seen, or if there is metastatic disease to the liver which may also be seen on ct scan. Otherwise, locally advanced cancer contained in the colon or lymph nodes may not be seen on ct scan.

Answered Dec 19, 2019

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Dr. Tracy Berg answered

Specializes in General Surgery

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.

Answered Oct 13, 2020

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Dr. Michael Puckett answered

Specializes in Radiology

On occasion you can see a mass in the colon, but a mass is usually obscured by stool or collapsed bowel.

Answered Dec 19, 2019

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Dr. David Dang answered

Specializes in Radiology

Most abdomen ct are routine ct without adequate prep of the bowels. A large mass may be visible on ct but a small one may be obscured by stools. Ct colography is virtual colonoscopy where there is additional colon prep to look for even small colon polyps.

Answered Dec 19, 2019

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