Departmental Bulletin Paper Possible Contribution of a Diverticulum to the Development and Rupture of Colonic Lymphangioma <Case Report>

Zenda, Takahiro  ,  Hagishita, Tomomi  ,  Moriya, Makio  ,  Kamesui, Tadashi  ,  Shimizu, Junzo  ,  Nakanishi, Isao

64 ( 1-2 )  , pp.23 - 26 , 2015-06 , Hiroshima University Medical Press
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.

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