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Doctor insights on: Can I Be Screened For Colon Cancer With A Ct Scan Instead Of A Colonoscopy

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Can I be screened for colon cancer with a CT scan instead of a colonoscopy?

Can I be screened for colon cancer with a CT scan instead of a colonoscopy?

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

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Dr. Barry Rosen
4,224 doctors shared insights

Cancer (Definition)

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


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

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

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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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If 61 yr m had a -ve whole body pet+ct done for renal mets 1 yr ago, how long we can postpone colonoscopy (first time)screening for colon cancer?

If 61 yr m had a -ve whole body pet+ct done for renal mets  1 yr ago, how long we can postpone colonoscopy (first time)screening for colon cancer?

Let me be: Sure i understand. She had a renal cancer removed, and that was more than a year ago, and pet showed no metastasis. She is asymptomatic and feeling well? There are advisories that colonoscopy should be done once each decade after 50. She would seem eligible for that, but there is no rush. ...Read more

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How likely is colon cancer in 31 year old? Doc said if CT Normal for RUQ pain then colonoscopy next. Is this necessary? No other symptoms

How likely is colon cancer in 31 year old? Doc said if CT Normal for RUQ pain then colonoscopy next. Is this necessary? No other symptoms

Perhaps not?: Generally speaking, a 31 year old patient with RUQ pain is unlikely to need a colonoscopy, especially if a CT is normal. It would be rare indeed for colon cancer to be causing these symptoms at your age. I assume you've had a normal abdominal ultrasound. If you haven't had an ultrasound that would be the first test to do before a CT. An online consultation at Health Tap might be helpful. ...Read more

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Colon cancer age 30?? RUQ pain, fecal occult test negative- CT- Normal- (GI tract WNL no obstruction or perforation) should I get colonoscopy for pain

Probably: Colon cancer is unlikely in your age group, but other GI and colon diseases can also cause such symptoms. Have you had your gallbladder evaluated? Remember, colon cancer has minimal symptoms and CT is NOT a great test for it. In sum though low yield I would likely recommend colonoscopy to you based on what I've read. ...Read more

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Grandmother died of colon cancer in her 70s. Granddaughter has had 3 clean colonoscopies in her 50 s. How often should I be screened?

Yes, over 50 : Every one over 50 years should undergo colonoscopy. If there is a history of colon cancer in the family, it can be done earlier. The biggest discomfort is the bowel prep to get ready for test. If you don't want a colonoscopy , it can be done by ct scans and performing virtual colonoscopy. Early colon cancer usually begins as a polyp and is curable. Colonoscopy is generally repeated every 5 years. ...Read more

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Might it be that a colonoscopy prevents colon cancer, or is it simply a screening tool?

Yes it can: Colonoscopy is done to look for polyp which are precursors of cancer. So if the polyp is removed before it becomes cancerous, then we have prevented development of colon cancer. ...Read more

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Outside of being screened often for colon cancer (colonoscopies), what can I do to lower my colon cancer risk as an ulcerative colitis patient?

Outside of being screened often for colon cancer (colonoscopies), what can I do to lower my colon cancer risk as an ulcerative colitis patient?

Most important: is polyp removal through recommended colonoscopy screenings. The longer you have had UC/inflammatory bowel disease, and if more than 1/3 to 1/2 of your colon is involved, the greater your risk of developing colorectal cancer. Controlling bowel inflammation by complying with your medication regimen is likely to be preventive. Avoid alcohol, tobacco, obesity. Low fat/high fiber diet, NSAIDs +/- ...Read more

Dr. Al Hegab
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Computed Tomography (Definition)

Ct uses xrays taken an 360 degrees combined with a computer to see"inside" the body. The table moves as the xray tube and detectors spin around the patient 10 times a second or more! the image shows excellent soft tissue detail, enhanced with injection of intravenous contrast or oral contrast. This way the body is shown in slices, in any plane, usually axially, but ...Read more


Dr. Michael Korona
1,791 doctors shared insights

Ct Scan (Definition)

Ct scan uses data from a beam of xrays and reconstructs a cross sectional image of your body. It is a high dose of xrays and used only when the benefits outweigh the risk. Cancer risk is 1 in 500 in children. Also using iodinated contrast might cause transient renal failure in about 5% of patients. (contrast induced nepropathy) most do not explain this to the patient as ...Read more