Doctor insights on:
Can An Abdominal Pelvic Cat Scan Screen For Colon Cancer Or See A Mass In The Rectum
Sometimes: Sometimes a cat scan will be able to see a mass in the colon or rectum but it is not a good test for screening for colorectal cancer. There is a specialized type of ct scan that creates a virtual image of the inside of the colon that is sometimes used when a patient is not a good candidate for a colonoscopy. ...Read more
Cancer is a group of diseases that is characterized by uncontrolled cell growth leading to invasion of surrounding tissues that spread to other parts of the body. Cancer can begin anywhere in the body and is usually related to one or more genetic mutations that allow normal cells to become malignant by interfering with internal cellular control mechanisms, such as programmed cell death or by preventing ...Read more
CT Scan Findings: Ct scan is not the best study to detect colon cancer or ulcers. Although a ct scan may show a large sized colon cancer, the sensitivity of this is greatly reduced without the administration of oral contrast. Ulcers are typically not seen on ct scan. The best diagnostic study for both of these would be an endoscopy and colonoscopy. ...Read more
On chemo for metastic colon cancer. Ct scan coming up - says Neck, thorax, abdomen and pelvis. Is neck usually scanned?
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
It can sometimes: Unfortunately, ct scans are not very good at finding small polyps like a colonoscopy does. The scan will usually only pick up larger lesions. The endoscopy has an additional benefit of allowing small polyps to be biopsied or removed. Polyps tend to grow to become cancer, so they should be removed if possible. Ct scan, won't allow treatment at same time, and thus, is not as good a test for colon ca. ...Read more
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
Pain abdomen, mostLy RUQ CT abdomen & pelvis- hida Abdom US, EGD, CBC, CMP, LDH, Lipase, Amalyse, stool all negative... Help! Can CT show colon cancer?
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
A friend has been told they have colon cancer, diagnosed via a tumour marker blood test, high cea, CT scan showed contained mass. Is this conclusive?
No, but...: But very suspicious for colon cancer. If your friend is similar in age to yourself a mass in the colon on ct scan is cancer until proven otherwise. And CEA levels can go up for other reasons but, given the mass, they would strongly favor cancer. But to answer your question "no"... They are not definitive. You would need a piece of the mass under a microscope to prove definitively its cancer. ...Read more
Chance 4 ab / pelvic CT scans all missed symptomatic colon cancer (narrow stools, occaision blood) over three years. Also had sigmoidosopy to 35cm?
Sometimes: Ct colography is never meant to replace a colonoscopy. At high volumn centers, the detection sensitivity of ct exam is indeed comparable to colonoscopy but you need to know the rate of detection of your imaging facility. Bowel prep is required for both procedures - no way around the unpleasant process. Beware that there is significant radiation exposure with the exam. ...Read more
A recent CT scan with contrast revealed two cysts on pancreas. What does this mean? Previous colon cancer and has esld. Also 6mm mass on liver.
Needs attention: Needs work up. Most of the pancreatic tumors are solid but cysadenoma, cystadeno carcinoma will present as cystic lesions need biopsy of these lesions to make sure they are not malignant also liver lesion. If pancreatic lesions are benign could be a candidate for liver transplantation for end stage liver disease (esld). ...Read more
Does apple core stricture with mass and few lymph nodes on ct always mean a colon cancer diagnosis or other possible differential diagnosis?
Likely: But you need a biopsy. Nothing is for sure ...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
Haven't had solid bowl movement more then 8 months pain & feel mass upper abdomen weight gain dad has colon cancer & aunt has stomach cancer worried?
Lots of issues...: You're describing many systemic concerns, but its impossible to tell here if your symptoms are all due to organic/metabolic disease or even related. Granted, your family history is notable, ; may indicate lynch syndrome. A thorough history ; physical with some simple investigatory lab studies ; x-rays would be a great place to start in getting the answers, reassurance ;/or treatment you need. ...Read more
Potentially: It could show up on CT if large enough, but small tumors may not be visualized. ...Read more
Not Designed for it:
Not what a ct scan is designed to do.
Usually colon cancer will not be clearly evident on ct until it is at stage iii or stage IV level, since it has to anatomically change the colon to be evident on ct. To get that level of change, it needs to be at minimum a locally advanced tumor.
Every once in a while it may be evident at the stage ii point, but very low sensitivity. ...Read more
Would a cat scan a month ago show advanced colon cancer? Been having weakness weight loss last few weeks and I hear you don't get symptoms till advnc
Depends: It depends on what you mean by advanced. If you mean spread to other organs, usually it will. If you mean advanced within the colon itself. Not unless it was really large. I've noticed that you seem to be asking a lot about colon cancer. If you have had a clear colonsocopy, you should be in the clear. ...Read more
Are CT scans with oral contrast useless for see colon cancer. My doc has ordered multiple over last 3 years, all clean, but hearing they are useless??
Ct: They are helpful but you need to have a colonosopy if there there is a concern ...Read more
Is it true that colon cancer can take years before causing symptoms? So a cat scan I had just a month ago showing nothing could be good news?
Yes...: Colon and rectal cancer is usually a slowly growing tumor in the colon or rectum. From its earliest beginnings as a colon polyp its estimated to take 10-15 years to grow into a cancer. A standard ct scan of the abdomen/pelvis is not a good or accurate test for early detection of colon cancer. Colonoscopy is the best test for early detection of polyps or cancer in the rectum and colon. ...Read more
Other good tests: Early colon cancer is not easily visible on Ultrasound. CT scan is under trials to find out its utility. Right now the best test is Colonoscopy where it is easy to visuallise early colon cancer and precursor lesions. Ask your doctor in case you may need one done. It is recommended for all adults aged 50 years or earlier if there is a family history of colon cancer. Ask your doctor's advice. ...Read more
Hlthy 38yo guy-A lot blood on TP after straining to poop-dark poop-slight red water-anus painful. AB CAT scan in Aug ok. % of chance of colon cancer?
Hemorrhoids: Blood in stool probably bright red due to internal fissure or hemorrhoids. With previous exam and neg CAT scan one suspects rectal exam was neg and a very strong possibility no relationship to a tumor found. Proctoscopy should be performed and if neg. Followed by colonoscopy to pinpoint nature of bleed. ...Read more
Can you have symptomatic colon cancer for five years without showing on ct scans (oral no iv contrast)? Have had five ct in past 5 years
Colon CA CT on show?: 41 F Asks: Can you have symptomatic colon cancer for five years without showing on ct scans (oral no iv contrast)? Have had five ct in past 5 years. ANS: CT not so good for colon cancer detection. What are symptoms for 5 years? This would be unusual as colon CA usually does not cause symptoms other than bleeding or obstruction. Unless it is also in liver now. That should show up on CT eventually. ...Read more
How reliable is a ab CT scan for colon cancer? Had 3, what percentage of cancers are missed in a CT scan? Trying to find stats.
No: A CAT scan is used to visually define the extent of metastatic colon cancer in the liver should metastasis be present. Liver failure is a condition measured by functional abnormalities that occur within the liver usually due to parenchymal damage such as inflammation from hepatitis. Here one measures serum enzymes and the presence of elevated alkaline phosphatase and bilirubin in serum. ...Read more
Had surgery for colon cancer no chemo, after 4 months CT scan showed spot on liver. Could it be cancer?
Possible: Depending on what stage your colon cancer was originally the risk of developing disease in the liver or elsewhere is variable. Colon cancer, when it spreads through the blood, does commonly go to the liver, however if only a small area and a single or small couple of lesions it can still be cured. Additional tests may help to further characterize this to help u decide if u need to treat it ornot. ...Read more
Ct scan showed spot on liver, have colon cancer but ultrasound came back negative does it mean it was wrong?
Pet or MRI may help: Other imaging modalities may help further clarify if this finding in ct is suspicious for malignancy or more likely benign if the ct and ultrasound have not been more specific. If u have older ct scans to compare and this is indeed new, then further clarification is needed. This all has to be taken into context of the bigger clinical picture including CEA as well as the rest of your body. ...Read more
Examples are: colonoscopy for colon polyp or cancer; mammograms for breast lesions or cancer; psa a blood test that could indicate enlargement of cancerous prostate tissue; blood sugar or hemoglobin a! c for diabetes. Many think that scanning the whole body will pick up a cancer--in all likelihood, it will not. There also is no good blood test, yet, ...Read more
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