Clarify: Adenocarcinoma is not precancerous, it is cancer. 5 mm is pretty small, which makes it sound like a polyp (not adenocarcinoma). If that was the case (maybe called a tubular adenoma?) , there should be nothing to worry about. Adenocarcinoma in the colon/rectum implies invasion deeper into the colon. Please clarify the results of your biopsy with your doctor.
Answered 8/24/2017
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