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.
May. A 3d ct, with colon preparation would be needed for reliable screening for colon polyps and cancer. A routine ct should not be relied upon for such screening. If a ct scan shows a lesion, that needs to be addressed, if it does not, that does not exclude colonic pathology.
IF GROWTH IS. Betond the wall of the bowel. It may show enlarged lymph nodes which will alert a doctor to do further studies. These scans are typically not very good for hollow intra abdominal organs. This is the reason why surveillance/screening colonoscopies/sigmoidoscopies are so important.

Related Questions

Chance of developing colon cancer 20 months after colonoscopy removal 5mm polyp removed. Having ct scan with and without contrast for left quad pain?

See below. If the colonoscopy was done properly, you are very unlikely to have colon cancer 20 months after the procedure. For good health - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Drink enough water daily, so that your urine is mostly colorless. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form. Practice safe sex. Read more...

What kind of bleeding do colon polyps / cancer show?

Occult/hidden. Most of the time there is no visible blood. Testing for bleeding lesions requires testing for occult blood, fecal occult blood test (fbot). There is more than one method. If is recommended that this test be done three times each year on persons over the age of 50, unless they have undergone colonoscopy. Read more...

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

Depends. 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. Read more...
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...
Likely not. On occasion you can see a mass in the colon, but a mass is usually obscured by stool or collapsed bowel. Read more...
Not if it's small. 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. Read more...

I've had uterine cancer when I was younger, am I more likely to get colon polyps?

Maybe. A recent study showed that only 4% of women with uterine ca had a colon polyp at the time of their hysterectomy. Colon ca is even less related to cevical cancer. But several families (lynch syndrome) have hereditary colon polyps, uterine cancer, and breast cancer. See a doc if you have this type of family history. And you still need a colonoscopy at age 50, as we are all at risk as we get older. Read more...
Probably not. There is not a relation between the two of them, that we know of. That could change tomorrow. Get your colonoscopy according to recommendations, and good luck. You are a cancer survivor! Read more...

Mom had 4 colon polyps at 35. I have sudden Fe deficient anemia &need infusions 1x/wk, try to have bm feel like something is in the way. Cancer?

Cancer unlikely. Iron deficiency is not uncommon in women due to loss of blood during menstruation. You may try to increase your intake of fiber food, or take a fiber laxative like Metamucil. In either case drink enough water daily so that your urine is colorless. For good health - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form. Practice safe sex. Get HPV vaccine. Read more...