title: Inflammatory myoglandular polyp causing hematochezia.
abstract: A case of inflammatory myoglandular polyp (IMGP) causing hematochezia is reported. The patient was a 33-year-old man who visited our hospital for further evaluation of hematochezia. Colonoscopy revealed a red, hard, spherical peduncular polyp with erosion and mucous exudation, about 20 mm in diameter, in the descending colon. Excluding the polyp, there was no lesion in the colorectum. 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 variable cystic changes. This polyp was diagnosed as an IMGP. The symptom of hematochezia was resolved after endoscopic resection. Our case shows that treatment is necessary for IMGP if intestinal bleeding occurs and endoscopists should be aware of the endoscopic characteristics of IMGP.
authors.affiliation: Department of Internal Medicine, Sumitomo Besshi Hospital, 3-1 Ohji-cho, Niihama 7928543, Japan. shoji_hirasaki@ni.sbh.gr.jp
authors.forename: Shoji
authors.initials: S
authors.lastname: Hirasaki
authors.forename: Masato
authors.initials: M
authors.lastname: Okuda
authors.forename: Kenichiro
authors.initials: K
authors.lastname: Kudo
authors.forename: Seiyuu
authors.initials: S
authors.lastname: Suzuki
authors.forename: Atsuko
authors.initials: A
authors.lastname: Shirakawa
mesh_terms: D000328:Adult; D003111:Colonic Polyps / Q000150:complications* / Q000473:pathology; D003937:Diagnosis, Differential; D006471:Gastrointestinal Hemorrhage / Q000209:etiology*; D006097:Granulation Tissue / Q000473:pathology; D006801:Humans; D007249:Inflammation / Q000473:pathology; D008297:Male; D009130:Muscle, Smooth / Q000473:pathology
references.citation: Turk J Gastroenterol. 2004 Jun;15(2):117-9
references.pmid: 15334325
references.citation: Endoscopy. 2003 Apr;35(4):363-5
references.pmid: 12664397
references.citation: J Gastroenterol Hepatol. 2005 Jul;20(7):1123
references.pmid: 15955226
references.citation: Pathol Res Pract. 2003;199(12):837-9
references.pmid: 14989496
references.citation: Rev Esp Enferm Dig. 1994 Jan;85(1):45-6
references.pmid: 8186003
references.citation: J Clin Gastroenterol. 1999 Jul;29(1):104-5
references.pmid: 10405247
references.citation: Indian J Gastroenterol. 1998 Apr;17(2):63-4
references.pmid: 9563226
references.citation: Am J Surg Pathol. 1992 Aug;16(8):772-9
references.pmid: 1309176
references.citation: Am J Surg Pathol. 1993 Aug;17(8):852-3
references.pmid: 8338196
references.citation: Histopathology. 1993 Dec;23(6):596-8
references.pmid: 8314251
references.citation: Nihon Shokakibyo Gakkai Zasshi. 1998 Feb;95(2):145-50
references.pmid: 9513567