title: Primitive round cell liposarcoma of the omentum: diagnostic value of ultrastructural study.
abstract: A 25-year-old woman presented with abdominal distension first observed 1 month earlier. She had a rapidly growing omental tumor that was eventually diagnosed as round cell liposarcoma by ultrastructural examination. This case illustrates the importance of ultrastructural study and the limitations of immunohistochemistry in the diagnosis of such tumors, particularly when they grow in unusual locations.
authors.affiliation: Department of Pathology, Hospital del Mar, Barcelona, Spain. 86780@imas.imim.es
authors.forename: Francesc
authors.initials: F
authors.lastname: Alameda
authors.forename: Josep Maria
authors.initials: JM
authors.lastname: Corominas
authors.forename: Carlos
authors.initials: C
authors.lastname: Barranco
authors.forename: Assumpta
authors.initials: A
authors.lastname: Munné
authors.forename: Teresa
authors.initials: T
authors.lastname: Baro
authors.forename: Nuria
authors.initials: N
authors.lastname: Baixeras
authors.forename: Josep
authors.initials: J
authors.lastname: Lloreta
authors.forename: Sergi
authors.initials: S
authors.lastname: Serrano
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D008080:Liposarcoma / Q000175:diagnosis* / Q000648:ultrastructure*; D008854:Microscopy, Electron; D009852:Omentum / Q000473:pathology* / Q000648:ultrastructure; D010534:Peritoneal Neoplasms / Q000175:diagnosis* / Q000648:ultrastructure*