Sessile polyps are flat growths that develop in the colon or intestines. There are several types of sessile polyps. These include sessile serrated adenomas, villous adenomas, tubular adenomas ...

Sessile serrated polyps and traditional serrated adenomas: These have a higher risk of being cancerous. Sessile are broad and flat polyps, while serrated polyps have a “saw-tooth” appearance.

Figure 5. Typical appearance of a sessile serrated adenoma/polyp in the ascending colon. Arrows indicate the indistinct upper edge of this flat, pale lesion. 1 Division of Gastroenterology and ...