title: Primary leiomyosarcoma arising in the lesser sac: report of a case.
abstract: We describe herein a very rare case of leiomyosarcoma arising in the lesser sac. A 58-year-old man with a psychiatric disorder was admitted to our department for the investigation of epigastralgia and nausea which he had been suffering since the previous month. A laparotomy revealed that the abdominal mass, found on physical examination, was a primary lesser omental tumor, histological examinations of which confirmed a diagnosis of leiomyosarcoma. The tumor cells showed a DNA diploid pattern. Leiomyosarcoma of the lesser sac is extremely unusual and it is important that it be distinguished from an extraluminal tumor of the abdomen.
authors.affiliation: Department of Surgery, Toyama Prefectural Central Hospital, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Kimura
authors.forename: K
authors.initials: K
authors.lastname: Maeda
authors.forename: K
authors.initials: K
authors.lastname: Konishi
authors.forename: A
authors.initials: A
authors.lastname: Tsuneda
authors.forename: K
authors.initials: K
authors.lastname: Tazawa
authors.forename: M
authors.initials: M
authors.lastname: Earashi
authors.forename: T
authors.initials: T
authors.lastname: Inoue
authors.forename: K
authors.initials: K
authors.lastname: Yabushita
authors.forename: Y
authors.initials: Y
authors.lastname: Kuroda
authors.forename: M
authors.initials: M
authors.lastname: Tsuji
authors.forename: A
authors.initials: A
authors.lastname: Miwa
mesh_terms: D004273:DNA, Neoplasm / Q000032:analysis; D006801:Humans; D007890:Leiomyosarcoma / Q000175:diagnosis* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D009852:Omentum; D010534:Peritoneal Neoplasms / Q000175:diagnosis* / Q000473:pathology; D011003:Ploidies; D014057:Tomography, X-Ray Computed
chemical_list: D004273:DNA, Neoplasm