title: Possible Contribution of a Diverticulum to the Development and Rupture of Colonic Lymphangioma.
abstract: A 55-year-old Japanese man with a history of diverticulitis underwent colonoscopy for careful evaluation of progressive anemia. A 5-mm depressed lesion oozing spontaneously was observed at the hepatic flexure. On suspicion of depressed-type of cancer, right-sided hemicolectomy was performed. Histopathological examination indicated a collapsed lymphangioma exactly over a diverticulum, which had previously been complicated diverticulitis. The colonic mucosa and lymphangioma prolapsed beyond the subserosal layer via the muscularis propria defect, resulting in a depressed lesion and mucosal laceration with hemorrhage. This case suggests the contribution of a colonic diverticulum to the development and rupture of lymphangioma, which needed to be distinguished from depressed-type colon cancer.
authors.forename: Takahiro
authors.initials: T
authors.lastname: Zenda
authors.forename: Tomomi
authors.initials: T
authors.lastname: Hagishita
authors.forename: Makio
authors.initials: M
authors.lastname: Moriya
authors.forename: Tadashi
authors.initials: T
authors.lastname: Kamesui
authors.forename: Junzo
authors.initials: J
authors.lastname: Shimizu
authors.forename: Isao
authors.initials: I
authors.lastname: Nakanishi
mesh_terms: D001706:Biopsy; D003082:Colectomy; D003110:Colonic Neoplasms / Q000175:diagnosis / Q000209:etiology* / Q000601:surgery; D003113:Colonoscopy; D003937:Diagnosis, Differential; D004241:Diverticulum, Colon / Q000150:complications* / Q000175:diagnosis / Q000601:surgery; D006471:Gastrointestinal Hemorrhage / Q000209:etiology; D006801:Humans; D008202:Lymphangioma / Q000175:diagnosis / Q000209:etiology* / Q000601:surgery; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D012307:Risk Factors; D012422:Rupture, Spontaneous; D014057:Tomography, X-Ray Computed