A Case of Colonic Muco-Submucosal Elongated Polyp / 대한소화기내시경학회지

Colonic muco-submucosal elongated polyp (CMSEP) is a rare disease which has been firstly reported by Matake. Only 21 cases have been reported since 1994. Although the mechanism of generation of such polyps remains unknown, their elongation may be caused by intestinal motion for a long period. The occurrence sites were distributed throughout the colon, excluding the rectum. CMSEP is coverd with normal mucosa and consisted of edematous, loose, fibrous, connective tissue and dense, fibrous submucosal layer, often dilatation of blood vessels and lymphatics. We present a case of CMSEP diagnosed by a colonoscopic polypectomy.