title: Torus hyperplasia of the pyloric antrum.
abstract: Primary or idiopathic hypertrophy of the pyloric muscle in adult, so called torus hyperplasia, is an infrequent but an established entity. It is caused by a circular muscle hypertrophy affecting the lesser curvature near the pylorus. Since most of the lesions are difficult to differentiate from tumor, distal gastrectomy is usually preformed to rule out most causes of pyloric lesions including neoplastic ones through a pathological study. A 56-yr-old man with a family history of gastric cancer presented with abdominal discomfort of 1 month duration. Upper gastrointestinal endoscopy showed a 1.0 cm sized irregular submucosal lesion proximal to the pylorus to the distal antrum on the lesser curvature. On colonoscopy examination, a 1.5 cm sized protruding mass was noticed on the appendiceal orifice. Gastrectomy and cecectomy were done, and histological section revealed marked hypertrophy of the distal circular pyloric musculature and an appendiceal mucocele. To the best of our knowledge, this is the first case of torus hyperplasia with appendiceal mucocele which is found incidentally.
authors.affiliation: Department of Internal Medicine, Konkuk University School of Medicine, Seoul, Korea.
authors.forename: Chi-Hun
authors.initials: CH
authors.lastname: Kim
authors.forename: Hye Seung
authors.initials: HS
authors.lastname: Han
authors.forename: Sun-Young
authors.initials: SY
authors.lastname: Lee
authors.forename: Byung Kook
authors.initials: BK
authors.lastname: Kim
authors.forename: In-Kyung
authors.initials: IK
authors.lastname: Sung
authors.forename: Moo Kyung
authors.initials: MK
authors.lastname: Seong
authors.forename: Kyung Yung
authors.initials: KY
authors.lastname: Lee
mesh_terms: D018291:Cystadenoma, Mucinous / Q000175:diagnosis; D016099:Endoscopy, Gastrointestinal; D005743:Gastrectomy; D006801:Humans; D006965:Hyperplasia / Q000175:diagnosis / Q000473:pathology / Q000601:surgery; D008297:Male; D008875:Middle Aged; D011706:Pyloric Antrum / Q000473:pathology* / Q000601:surgery; D014057:Tomography, X-Ray Computed