title: Mucosal schwann-cell hamartoma diagnosed by using an endoscopic snare polypectomy.
abstract: Colorectal polyps of mesenchymal origin are a rare group of colorectal disorders. A "mucosal Schwann-cell hamartoma," which is one type of polypoid lesion that originates from the mesenchyme, is a newly-proposed disease entity to be distinguished from the neurofibromas found in type-1 neurofibromatosis. This lesion is composed of pure Schwann-cell proliferation in the lamina propria and shows diffuse immunoreactivity for the S-100 protein. We report a case of a polypoid lesion of the colon with the features of this recently-proposed disease entity.
authors.affiliation: Department of Internal Medicine, The Catholic University of Korea College of Medicine, Seoul, Korea.
authors.forename: Myoung Nam
authors.initials: MN
authors.lastname: Bae
authors.forename: Jung Eun
authors.initials: JE
authors.lastname: Lee
authors.forename: Sang Mook
authors.initials: SM
authors.lastname: Bae
authors.forename: Eun Young
authors.initials: EY
authors.lastname: Kim
authors.forename: Eun Ok
authors.initials: EO
authors.lastname: Kim
authors.forename: Sung Hoon
authors.initials: SH
authors.lastname: Jung
authors.forename: Jung Hwan
authors.initials: JH
authors.lastname: Oh
authors.forename: Ki Ok
authors.initials: KO
authors.lastname: Min
keywords: Colon polyps; Hamartoma; Neurofibroma; Neuroma; Schwann cells