title: Collecting duct carcinoma of the kidney with retroperitoneal lymph mass.
abstract: OBJECTIVE
  Collecting duct carcinoma (Bellini) of the kidney is a rare histological type of renal cell carcinoma (1%) with distinctive clinical and histopathological features. It is associated with aggressive behavior and a poor prognosis.
  
  
  RESULTS
  We describe the clinical and immunohistochemical features of a new case of collecting duct carcinoma and discuss the radiological findings and therapeutic aspects.
  
  
  CONCLUSIONS
  Collecting duct carcinoma is associated with aggressive behavior and a poor prognosis. The imaging features (US and CT) suggest the diagnosis. The immunohistochemical characteristics of the distal tubular epithelium aid the differential diagnosis between renal tumours. Percutaneous biopsy with a Tru-cut needle can be useful for pathological diagnosis. Management is currently restricted to radical nephrectomy, and chemotherapy or immunotherapy may offer only limited benefits.
authors.affiliation: Department of Urology, Virgen de las Nieves Hospital, Granada, Spain. mortig@fundacionhvn.org
authors.forename: Manuel
authors.initials: M
authors.lastname: Ortiz Gorraiz
authors.forename: Jose Luis
authors.initials: JL
authors.lastname: Rosales Leal
authors.forename: Miguel
authors.initials: M
authors.lastname: Tallada Buñuel
authors.forename: Sonia
authors.initials: S
authors.lastname: Zilbermann Morales
mesh_terms: D002292:Carcinoma, Renal Cell / Q000175:diagnosis / Q000556:secondary / Q000628:therapy; D017809:Fatal Outcome; D006801:Humans; D007680:Kidney Neoplasms / Q000175:diagnosis / Q000628:therapy; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D012187:Retroperitoneal Space