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.
Sometimes. Usually colonoscopy with biopsy is the best way to make that diagnosis. Screening colonography (a ct based test) can identify larger masses in the colon, but standard colonoscopy would still be required for diagnosis.
Maybe yes.. If the cancer is very early--tiny and has not spread to local lymphnodes etc...It may not. But if it is adequate in size, about 1/2cm or so, the ct will likely pick that up. Ct scan has really good resolution these days and with the trained eyes of the radiologists, I am sure you will be given a thorough reading/evaluation. Consult your doc.. Good luck.

Related Questions

If colon cancer was causing pain RUQ wouldn't it be big enough to show on CT of abdomen and pelvis? 31 yo- fecal occult blood negative

Not likely colon Ca. Classic colon cancer causes pain via colon obstruction, so in that case, CT would see it. But this would not be expected in a 31 yo w/ occult neg stool. RUQ pain can be any number of causes in young adult. Need to know more history and clinical exam by a Dr. to advise work up. Best screen for colon Ca is colonoscopy, but unless strong family history, may start around 50 yrs old. 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...

Can a CT on abdomen with contrast show colon cancer if there are present symtoms?

It can, if it is. Large enough, but not necessarily. The best test is colonoscopy. At your age, colon cancer is rare, unless you have ulcerative colitis or positive family history. Read more...
Not always. Unless the cancer lesion is fairly large, colon cancer is not commonly seen on a ct scan. Colonoscopy is the best test for colon cancer. Some places have the ability to perform a specialized ct colonography x-ray exam that may see lesions about 1 cm or larger. Read more...

On chemo for metastic colon cancer. Ct scan coming up - says Neck, thorax, abdomen and pelvis. Is neck usually scanned?

Not usually, but... Generally colon cancer spreads to the lymph nodes, liver and lungs, so those are the first organs looked at to see if it has spread or not. However, another symptom or physical finding may prompt a doctor to include another area of the body, such as the neck or brain. Read more...
Yes. There are multiple sites where metastatic colon cancer can appear. While the liver and lung are the most common visceral sites other than lymph nodes in abdomen , spread can occur to the left supraclavicular fossa. Troisier sign is the finding of a hard and enlarged left supraclavicular neck node (Virchow's node). It is a sign of metastatic abdominal malignancy draining the thoracic duct. Read more...

I have lwr rt quad pn in abdomen and rt back flank. My back hurts most when laying down. I have a CT in 3 days. Fam hst of colon cancer dad & brot?

Many possibilities. Right lower quadrant pain with radiation to the flank can be many different things. Possibilities include appendix inflammation, constipation, kidney infection, kidney tumor, colon tumor, etc. The imaging study will be very helpful. If the imaging study is inconclusive consider having a colonoscopy to be complete. Good luck. Read more...
Needs workup. I'm not sure anyone can give you a good answer with the limited information. However, if the pain increases, and you develop fevers and chills or nausea, you should see a physician immediately. Diagnosis could be (among others) kidney stone, appendicitis, constipation, gallbladder disease. Read more...