title: [Bellini duct carcinoma: report of two cases].
abstract: OBJECTIVE
  We report two cases of collecting duct carcinoma that were diagnosed in our hospital in a six-month period.
  
  
  RESULTS
  The first case was a 75years-old woman showing in CT scan a mass in the left kidney which infiltrated perinephric fat. The second case was a 72-years-old that showed in a CT scan a right renal pelvis lesion, involving inferior vena cava and renal vein. After surgical resection by radical nephrectomy in both cases, we confirmed the histological diagnosis of collecting duct carcinoma.
  
  
  CONCLUSIONS
  Collecting duct carcinoma is a rare variant of renal cell carcinoma which originates from the epithelium of the collecting tubule. It is characterized by both its aggressiveness and peculiar histological and immunohistochemical diagnosis, that separates it from the rest of renal tumors.
authors.affiliation: Servicio de Urología, Complejo Hospitalario de Albacete, Albacete, España. pedrocarrion1980@hotmail.com
authors.forename: Pedro
authors.initials: P
authors.lastname: Carrión López
authors.forename: José Miguel
authors.initials: JM
authors.lastname: Giménez Bachs
authors.forename: María José
authors.initials: MJ
authors.lastname: Donate Moreno
authors.forename: Héctor
authors.initials: H
authors.lastname: Pastor Navarro
authors.forename: Luis
authors.initials: L
authors.lastname: Cañamares Pabolaza
authors.forename: Miguel
authors.initials: M
authors.lastname: Segura Martín
authors.forename: Manuel
authors.initials: M
authors.lastname: Atienzar Tobarra
authors.forename: Antonio
authors.initials: A
authors.lastname: Salinas Sánchez
authors.forename: Julio Antonio
authors.initials: JA
authors.lastname: Virsedo Rodríguez
mesh_terms: D000368:Aged; D002292:Carcinoma, Renal Cell / Q000473:pathology* / Q000601:surgery; D017809:Fatal Outcome; D005260:Female; D006801:Humans; D007680:Kidney Neoplasms / Q000473:pathology* / Q000601:surgery; D007685:Kidney Tubules, Collecting / Q000473:pathology* / Q000601:surgery; D008297:Male; D012082:Renal Veins / Q000473:pathology; D014682:Vena Cava, Inferior / Q000473:pathology