title: Angiomyolipoma of the colon: report of a case.
abstract: Angiomyolipomas are benign mesenchymal tumors mostly arising from the kidney. Angiomyolipoma of the colon is extremely rare. Here we report the findings of a 51-year-old man who presented with a submucosal tumor covered with normal mucosa and hemorrhage in the descending colon. He underwent a partial resection of the descending colon. A histopathological examination showed that the tumor of 5.7 cm in diameter included smooth muscle (spindle cell type), mature adipose tissue, and vessels, and therefore a diagnosis of angiomyolipoma was made. A submucosal type of angiomyolipoma of the colon is extremely rare. If a renal angiomyolipoma is larger than 4 cm, there is a risk of rupture. When colonoscopy shows a submucosal tumor of the colon with hemorrhage, angiomyolipoma should be considered. If an angiomyolipoma of the colon is large, surgical resection should be considered as a treatment option due to the risk of hemorrhage.
authors.affiliation: Department of Surgery, Chugoku Rosai Hospital, Kure, Hiroshima, Japan.
authors.forename: Koichi
authors.initials: K
authors.lastname: Oishi
authors.forename: Saburo
authors.initials: S
authors.lastname: Fukuda
authors.forename: Hideto
authors.initials: H
authors.lastname: Sakimoto
authors.forename: Takaaki
authors.initials: T
authors.lastname: Eto
authors.forename: Makoto
authors.initials: M
authors.lastname: Takahashi
authors.forename: Toshihiro
authors.initials: T
authors.lastname: Nishida
mesh_terms: D018206:Angiolipoma / Q000473:pathology / Q000601:surgery*; D001706:Biopsy; D003082:Colectomy / Q000379:methods*; D003110:Colonic Neoplasms / Q000473:pathology / Q000601:surgery*; D003113:Colonoscopy; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D008875:Middle Aged