title: Lobulated inflammatory myoglandular polyp in the ascending colon observed by magnifying endoscopy and treated with endoscopic polypectomy.
abstract: The patient was a 33-year-old man with hematochezia. Colonoscopy revealed a lobulated peduncular polyp with bleeding, about 40 mm in diameter, in the ascending colon. The polyp had both red and white components and a mosaic pattern. Magnifying observation revealed a red rugged surface component, and smooth white nodules with enlarged round or oval crypt openings. Endoscopic polypectomy was performed. Histological examination of the specimen revealed inflammatory granulation tissue in the lamina propria, proliferation of smooth muscle, and hyperplastic glands with cystic change. This polyp was diagnosed as inflammatory myoglandular polyp (IMGP). Lobulated-type IMGP in the ascending colon is rare.
authors: Department of Internal Medicine, Sumitomo Besshi Hospital, Niihama 7928543, Japan.
authors: Hiromitsu
authors: H
authors: Kanzaki
authors: Shoji
authors: S
authors: Hirasaki
authors: Masato
authors: M
authors: Okuda
authors: Kenichiro
authors: K
authors: Kudo
authors: Seiyuu
authors: S
authors: Suzuki
mesh_terms: D000328:Adult; D044682:Colon, Ascending / Q000473:pathology* / Q000601:surgery*; D003111:Colonic Polyps / Q000150:complications / Q000473:pathology* / Q000601:surgery*; D003113:Colonoscopy / Q000379:methods; D006471:Gastrointestinal Hemorrhage / Q000209:etiology / Q000473:pathology / Q000601:surgery; D006801:Humans; D007089:Image Enhancement; D007249:Inflammation / Q000150:complications / Q000473:pathology* / Q000601:surgery*; D008297:Male