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A 38-year-old female asked:

Which is more common with cancer, occult blood or blood that you can see. does this change as disease progresses?

1 doctor answer2 doctors weighed in
Dr. Barry Rosen
General Surgery 34 years experience
Occult: Bleeding from a tumor in the colon or rectum is usually like a dripping faucet; therefore, it often remains hidden to the naked eye.Another critical factor is the location of the tumor in the intestinal tract: the closer the tumor is to the anus, the more likely to actually see blood in the stool. Regardless, occult blood is readily identified with a simple test available otc or at your dr's ofc.

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Last updated Dec 10, 2013
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