A member asked:

What is the frequency of benign colon tumors compared to cancerous tumors?

A doctor has provided 1 answer

Small and about 5%: Other than for congenital polyposis the majority of lesions arise in a field effect initiated by the polyoma virus. Contrary to the belief that adenomatous polyps convert to malignant polyps and then Ca this occurs in about 5 % of pts. 95% arise from premalignant cells in the viral or carcinogen field.

Answered 11/6/2018

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