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 ...

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Advanced neoplasia was defined as a tubular adenoma ≥ 10 mm or any adenoma with villous features or high-grade dysplasia, sessile serrated polyp ≥ 10 mm, sessile serrated polyp with dysplasia ...

[45] 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 ...