A case of non-tumorous stalagmite-shaped colonic polyp indicating histological findings like mucosal polyp or colonic muco-submucosal elongated polyp

Abstract

A case report of a 38-years-old male patient with a non-tumorous colonic polyp was described. This patient had a complaint of positive occult blood of stool in Sep 2002. Examinations of barium enema and colonoscopy showed a stalagmite-shaped polyp at the ceacum. Polypectomy was done in Nov 2002. Bizarre shape of this polyp was considered to be an inflammatory, however, pathological examination revealed lymphangiectasia, edema and telangiectasia in submucosa with no inflammatory cells. These findings were the same as those of mucosal polyp in the colon or colonic muco-submucosal elongated polyp (CMSEP) . We considered that inflammatory cells of this polyp disappeared over a long period of time and mimicked mucosal polyp or CMSEP.