title: [Solitary pararenal fibrous tumor].
abstract: OBJECTIVE
  To report a rare clinical case of solitary pararenal fibrous tumor, analyzing its pathological characteristics and prognosis by a bibliographic review.
  
  
  RESULTS
  We present the case of a 36-year-old male consulting for right flank colic pain, which was diagnosed of a solid mass in the lower pole of the right kidney and underwent right radical nephrectomy. Pathological study of the surgical specimen showed the presence of a solitary pararenal fibrous tumor.
  
  
  CONCLUSIONS
  Solitary fibrous tumor is a rare neoplasia, being its pararenal localization even rarer. It is a tumor with benign behavior in up to 90% of the cases. The immunohistochemical study is the key to diagnosis.
authors.affiliation: Servicio de Urología I, Hospital Universitario Central de Asturias, Oviedo, España. malvarez79@mixmail.com
authors.forename: Miguel
authors.initials: M
authors.lastname: Alvarez Múgica
authors.forename: Antonio
authors.initials: A
authors.lastname: Jalón Monzón
authors.forename: Jesús María
authors.initials: JM
authors.lastname: Fernández Gómez
authors.forename: Juan Javier
authors.initials: JJ
authors.lastname: Rodríguez Martínez
authors.forename: José Luis
authors.initials: JL
authors.lastname: Martín Benito
authors.forename: Oscar
authors.initials: O
authors.lastname: Rodríguez Faba
authors.forename: Roberto Carlos
authors.initials: RC
authors.lastname: González Alvarez
authors.forename: Laura
authors.initials: L
authors.lastname: Rodríguez Robles
authors.forename: Javier
authors.initials: J
authors.lastname: Regaderas Sejas
authors.forename: Sawfan
authors.initials: S
authors.lastname: Escaf Barmadah
mesh_terms: D000328:Adult; D006801:Humans; D007680:Kidney Neoplasms / Q000000981:diagnostic imaging / Q000601:surgery; D008297:Male; D018218:Neoplasms, Fibrous Tissue / Q000000981:diagnostic imaging / Q000601:surgery; D011859:Radiography