A 42-year-old female asked:
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chance that 4 ct scans over 2 1/2 years would all miss sympotomatic colon cancer (narrow stool, occasion blood), also sigmoidscope to 35 cm.

1 doctor answer
Dr. Andrew Hoffman
34 years experience General Surgery
Fairly high risk: CT scans are NOT good tools for looking inside the bowel. Endoscopy is the preferred tool, but a sigmoidoscopy, at its best, misses looking at half the colon. A look to merely 35 cm has missed about 85-90% of the colon. The usual method to evaluate the colon is a complete colonoscopy.
Answered on Aug 15, 2015
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Dr. Ajay Acharya
A Verified Doctor commented
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Nothing in medicine is 100%
Oct 26, 2014

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