A CASE OF IMPLANTATION CYST DIAGNOSED BY PATHOLOGIC EXAMINATION OF A SPECIMEN OBTAINED BY ENDOSCOPIC MUCOSAL CUTTING

Abstract

A 37-year-old man with sigmoid colon cancer underwent sigmoidectomy. Colonoscopy revealed a submucosal tumor at the anal side of the anastomosis. When we cut the surface of the tumor open, fluid with sticky contents was observed and removed. A specimen was obtained from the inner surface of the tumor. Pathologic examination did not reveal any atypical cells. Therefore, we diagnosed this case as implantation cyst.