title: [Primary leiomyosarcoma of the omentum].
abstract: The clinical and histological findings of a patient with a primary omental leiomyosarcoma are described.
  
  
  METHODS
  A 29 years old female patient presented with a 11 month history of constipation, progressive abdominal swelling and weight gain over the last 4 months. On physical examination a large abdominal tumor was found. An ultrasonographic evaluation disclosed a giant mass with a mixed content, of approximately 40 x 17 cm size. Two days latter a celiotomy was done, finding the tumor mass depending of the great omentum, with high vascularity and no evidence of metastasis. A complete resection was performed. The histopathologic report was of primary omental leiomyosarcoma. This tumor is very rare and the case presented is possibly the sixth in the indexed world literature.
authors.affiliation: Facultad de Medicina, Universidad Autónoma de Querétaro, Qro.
authors.forename: M
authors.initials: M
authors.lastname: Vallejo Soto
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D007890:Leiomyosarcoma / Q000175:diagnosis / Q000601:surgery; D009852:Omentum; D010534:Peritoneal Neoplasms / Q000175:diagnosis / Q000601:surgery
vernacular_title: Leiomiosarcoma primario de epiplón.