title: [A case of inflammatory myofibroblastic tumor of the lesser omentum with intratumoral hemorrhage].
abstract: A 24-year-old man presented complaining of epigastralgia and tenderness in the epigastric region. An abdominal computed tomography revealed a low density tumor, extending between the anterior wall of the stomach and the abdominal wall. Because the tumor was found to enlarge, an operation was performed to remove the tumor. During the operation, it was revealed that the tumor was connected with the lesser omentum, which suggested that it had originated from the lesser omentum. We diagnosed an inflammatory myofibroblastic tumor based on the pathological examination, which revealed infiltration of inflammatory cells, sparse proliferation of spindle cells and limited proliferation of collagen fibers, characterized by an irregular arrangement.
authors.affiliation: Department of Gastroenterology, Matsushita Memorial Hospital. y_utti0928@yahoo.co.jp
authors.forename: Yuki
authors.initials: Y
authors.lastname: Uchiyama
authors.forename: Ryuzo
authors.initials: R
authors.lastname: Matsuyama
authors.forename: Kentaro
authors.initials: K
authors.lastname: Suzuki
authors.forename: Mika
authors.initials: M
authors.lastname: Okita
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Isozaki
authors.forename: Tsuyoshi
authors.initials: T
authors.lastname: Ishikawa
authors.forename: Yasuyuki
authors.initials: Y
authors.lastname: Nagao
authors.forename: Hirokazu
authors.initials: H
authors.lastname: Oyamada
authors.forename: Akinori
authors.initials: A
authors.lastname: Noguchi
authors.forename: Kenji
authors.initials: K
authors.lastname: Kawabata
mesh_terms: D000328:Adult; D006470:Hemorrhage / Q000473:pathology; D006801:Humans; D007249:Inflammation / Q000473:pathology; D008297:Male; D009379:Neoplasms, Muscle Tissue / Q000473:pathology* / Q000601:surgery; D009852:Omentum; D010534:Peritoneal Neoplasms / Q000473:pathology*