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can an abdominal pelvic cat scan screen for colon cancer or see a mass in the rectum

A member asked:
Dr. John Lipman
35 years experience Radiology
Possibly & Yes: These are 2 different scenarios. Screening is performed in asymptomatic patients. You can screen for colon cancer with a special type of ct scan calle ... Read More
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Dr. Carlo Contreras
A Verified Doctor answered
A US doctor answered Learn more
Potentially: If the masses are large enough, they can be seen on cat scan. In order to increase the chances of these being seen, the cat scan has to be administer ... Read More
Dr. Robert Green
27 years experience Medical Oncology
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 speci ... Read More
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A 48-year-old female asked:
Dr. Michael Zadeh
16 years experience General Surgery
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 gre ... Read More
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Dr. George Klauber
Specializes in Pediatric Urology
No: Contrast is needed to outline these abnormalities. Barium or contast enema very good for demionstarting colon cancer, however colonoscopy is best. Ct ... Read More
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A 67-year-old female asked:
Dr. Mark Dickson
22 years experience General Surgery
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, ... Read More
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Dr. Myron Arlen
63 years experience Surgical Oncology
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 ... Read More
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A 39-year-old female asked:
Dr. Carlos Encarnacion
34 years experience Medical Oncology
Depends: If you mean a regular ct with contrast (and not a virtual colonoscopy), the answer is occasionally. If the cancer is spread, you may see enlarged nod ... Read More
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A 31-year-old female asked:
Dr. Paul Garrett
39 years experience Radiology
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 stoo ... Read More
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A 31-year-old female asked:
Dr. Edgar Mendizabal
54 years experience Internal Medicine
Last question first: sometimes, if it is large. A colonoscopy is better.
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A 39-year-old male asked:
Dr. Mark Hoepfner
38 years experience General Surgery
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 ... Read More
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A 70-year-old male asked:
Dr. Mark Hoepfner
38 years experience General Surgery
Biopsy: Biopsy of the mass at colonoscopy is the only conclusive test, but the list of abnormalities identified is strongly concerning for colon cancer. Best ... Read More
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A 28-year-old female asked:
Dr. Rebecca Gliksman
37 years experience Internal Medicine
Right pelvic pain: Have other GI signs ?, nausea /vomiting? diarrhea? blood in stool? Able to eat? May be GI - gallbladder, diverticulum ( meckels- but that is assoc ... Read More
A 41-year-old member asked:
Dr. Ronald Kline
Specializes in Colon and Rectal Surgery
Yes: Virtual colonoscopy can screen for polyps. If one is found a traditional colonoscopy will be needed to remove it. Virtual colonoscopy is good for foll ... Read More
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