A colonoscopy image of colon segment, showing the lining of the colon where a polyp was removed.

A colonoscopy image of a colon polyp, showing the lining of the colon with a polyp.

A colonoscopy photo of a pedunculated colon polyp, showing the lining of the colon with a pedunculated polyp.

A colonoscopy picture of a pedunculated colon polyp, showing the lining of the colon with a pedunculated polyp marked with a white arrow. The stalk of the polyp is clearly shown.

An image of colon specimen with colon polyps and a colon tumor, showing a cross section of the colon with two polyps and one colon tumor.

A colonoscopy photo of pseudo colon polyps, showing the lining of the colon with pseudo-polyps.

A colonoscopy picture of a large pedunculated colon polyp, showing the lining of the colon with a large pedunculated obstructing polyp. The stalk of the polyp is clearly shown.