title: Primary leiomyosarcoma of the greater omentum: a case report.
abstract: BACKGROUND
  Greater omentum leiomyosarcomas are rare tumors with only a few cases reported in literature.
  
  
  METHODS
  We report the case of a 68-year-old man who consulted complaining of diffuse abdominal pain without a palpable mass at physical examination. Imaging studies revealed a solid-cystic lesion in the right lower quadrant. Surgical resection was performed and the tumor was diagnosed as a leiomyoscarcoma by histological and immunohistochemical examinations.
  
  
  CONCLUSIONS
  Surgical resection of all lesions seems to be a reasonable therapeutic approach if resection is feasible. Chemotherapy may be used in selected cases.
  
  
  CONCLUSIONS
  More cases are needed to define the best treatment approach of this disease.
authors: Digestive Surgery Department, School of Medicine, Pontifical Catholic University of Chile, Santiago, Chile.
authors: Alejandro
authors: A
authors: Brañes
authors: Pathology Department, School of Medicine, Pontifical Catholic University of Chile, Santiago, Chile.
authors: Caroll
authors: C
authors: Bustamante
authors: Pathology Department, School of Medicine, Pontifical Catholic University of Chile, Santiago, Chile.
authors: José
authors: J
authors: Valbuena
authors: Digestive Surgery Department, School of Medicine, Pontifical Catholic University of Chile, Santiago, Chile.
authors: Fernando
authors: F
authors: Pimentel
authors: Digestive Surgery Department, School of Medicine, Pontifical Catholic University of Chile, Santiago, Chile. Electronic address: nfquezada@gmail.com.
authors: Nicolás
authors: N
authors: Quezada
keywords: Case report; Greater omentum; Leiomyosarcoma; Primary tumor