Adenocarcinoma arising in small sessile serrated adenoma/polyp (SSA/P) of the colon: Clinicopathological study of eight lesions

We reviewed the clinicopathological findings of eight cases of sessile serrated adenoma/polyps ( SSA / P s) with carcinoma, the largest diameter of which was 10 mm or less. All lesions were polyps located in the right side of the colon. Four lesions showed submucosal invasion and one lesion invaded the proper muscle layer. The depth of invasion, however, did not seem to be related to the carcinoma area size. Most carcinomas were well to...