title: Primary omental liposarcoma presenting with torsion: a case report.
abstract: An 83 year-old man was admitted because of abdominal pain and distention. A mass measuring 20x10 cm and associated with tenderness and guarding was palpable in the right lower abdomen. Ultrasonography and computed tomography showed a tumor with solid and multiple cystic areas. Celiac angiography showed slight tumor vascularity fed by the right gastroepiploic artery. A malignant tumor of the omentum was suspected. At laparotomy, torsion of the omental pedicle of the tumor was found. Histological examination of the resected tumor revealed characteristics of round-cell liposarcoma, which usually has a poor prognosis. The patient has been alive and well for 2 years. Primary liposarcoma of the omentum has been reported in only seven previous cases. None of these patients presented with torsion, and no report has thus far included a documented survival.
authors.affiliation: Second Department of Surgery, Gunma University School of Medicine, Maebashi, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Tsutsumi
authors.forename: S
authors.initials: S
authors.lastname: Ohwada
authors.forename: I
authors.initials: I
authors.lastname: Takeyoshi
authors.forename: M
authors.initials: M
authors.lastname: Izumi
authors.forename: T
authors.initials: T
authors.lastname: Ogawa
authors.forename: T
authors.initials: T
authors.lastname: Fukusato
authors.forename: Y
authors.initials: Y
authors.lastname: Morishita
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D003952:Diagnostic Imaging; D006801:Humans; D008080:Liposarcoma / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D008297:Male; D009852:Omentum / Q000473:pathology / Q000601:surgery; D010534:Peritoneal Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D011379:Prognosis; D014102:Torsion Abnormality