title: [Large retroperitoneal malignant fibrohistiocytoma: report of one case].
abstract: OBJECTIVE
  To report one case of a large retroperitoneal malignant fibrohistiocytoma.
  
  
  RESULTS
  40-year-old female with the diagnosis of a large right retroperitoneal mass after a study for right flank pain and weight loss over several months. Surgery was performed with excision of a large tumor; the pathologic diagnosis was malignant fibrohistiocytoma.
  
  
  CONCLUSIONS
  Primary retroperitoneal tumors are rare neoplasias, usually diagnosed in advanced stages. The malignant fibrohistiocytoma is an infrequent entity with difficult histological diagnosis and poor prognosis. To date, the only valid option is surgery, because adjuvant treatments do not offer clear advantages today.
authors.affiliation: Servicio de Urología, Complejo Hospitalario Universitario de Albacete, Albacete, España. gbjosem@sescam.jccm.es
authors.forename: José Miguel
authors.initials: JM
authors.lastname: Giménez Bachs
authors.forename: Antonio
authors.initials: A
authors.lastname: Salinas Sánchez
authors.forename: Juan
authors.initials: J
authors.lastname: Lorenzo Romero
authors.forename: María José
authors.initials: MJ
authors.lastname: Donate Moreno
authors.forename: Ibrahim R
authors.initials: IR
authors.lastname: Hernández Millán
authors.forename: Miguel
authors.initials: M
authors.lastname: Segura Martín
authors.forename: José María
authors.initials: JM
authors.lastname: Pastor Guzmán
authors.forename: Julio
authors.initials: J
authors.lastname: Virseda Rodríguez
mesh_terms: D000328:Adult; D005260:Female; D018219:Histiocytoma, Benign Fibrous / Q000175:diagnosis / Q000601:surgery; D006801:Humans; D012186:Retroperitoneal Neoplasms / Q000175:diagnosis / Q000601:surgery