A morphologic analysis of sessile serrated polyps observed during routine colonoscopy (with video).

Background: Proximal colorectal cancer may arise from sessile serrated polyps (SSPs), which are often inconspicuous during colonoscopy. The gross morphologic characteristics of SSPs have not been systematically described, and this omission may contribute to colonoscopists overlooking them.

Objectives: To analyze the gross morphologic characteristics of SSPs detected during routine colonoscopy.