title: [Idiopathic retroperitoneal fibrosis].
abstract: OBJECTIVE
  A case of idiopathic retroperitoneal fibrosis in a 34-year-old man with anemia and elevated erythrocyte sedimentation rate is presented.
  
  
  RESULTS
  Ultrasound, CT and MRI evaluation and pathological study were performed. These diagnostic imaging techniques demonstrated an infiltrating mass in the upper portion of the abdomen which was resected. Histological and immunohistochemical studies of the surgical specimen demonstrated sclerosing retroperitonitis.
  
  
  CONCLUSIONS
  Idiopathic retroperitoneal fibrosis (Ormond's disease) is a rare disease entity whose etiology is obscure and is characterized by retroperitoneal fibrosis with inflammatory infiltrates composed of plasma cells, lymphocytes and eosinophils. This case is of interest due to its atypical location, and because the patient was young with no remarkable clinical history and only mild anemia and an elevated erythrocyte sedimentation rate.
authors.affiliation: Servicio de Anatomía Patológica, Hospital Na Sa de Covadonga (HCA), Oviedo, Asturias, España. alejovara@arrakis.es
authors.forename: B
authors.initials: B
authors.lastname: Madrigal Rubiales
authors.forename: A
authors.initials: A
authors.lastname: Vara
authors.forename: P
authors.initials: P
authors.lastname: Ablanedo
authors.forename: M
authors.initials: M
authors.lastname: Herreros
authors.forename: L
authors.initials: L
authors.lastname: Vazquez
authors.forename: M
authors.initials: M
authors.lastname: Fresno
mesh_terms: D000328:Adult; D006801:Humans; D008297:Male; D012185:Retroperitoneal Fibrosis / Q000175:diagnosis* / Q000209:etiology