title: [Collecting duct carcinoma. Personal experience and review of the literature].
abstract: OBJECTIVE
  To present our experience with renal collecting duct carcinoma and review the literature.
  
  
  METHODS
  We reviewed our experience with collecting duct carcinoma of the kidney. We found 6 cases out of 176 nephrectomies (3.4%), which accounts for one of the largest series reported in the literature. The radiological, histological and immunohistochemical findings are analyzed.
  
  
  RESULTS
  The histological and immunohistochemical findings showed a specificity for high molecular weight cytokeratins and Ulex europeaeus but the imaging findings were not distinct from those of other renal tumors. According to the anatomopathological findings, we have classified the patients into three groups with three distinct courses. All patients underwent radical nephrectomy and one patient received adjuvant therapy.
  
  
  CONCLUSIONS
  We have identified a subgroup of low grade collecting duct carcinoma of the kidney with a particularly favorable behavior in two patients of our series. At 56 and 41 months' follow-up, both patients remain disease-free. As reported in the literature, patients with high grade and stage collecting duct carcinoma of the kidney have a poor outcome. They develop severe complications and die less than one year after the diagnosis, despite adjuvant immunotherapy.
authors.affiliation: Cátedra y Servicio de Urología, Hospital Clíniso San Carlos, Universidad Complutense, Madrid, España.
authors.forename: Enrique
authors.initials: E
authors.lastname: de la Peña Zarzuelo
authors.forename: Jesús
authors.initials: J
authors.lastname: Moreno Sierra
authors.forename: Gloria
authors.initials: G
authors.lastname: Bocardo Fajardo
authors.forename: Enrique
authors.initials: E
authors.lastname: Redondo González
authors.forename: Angel
authors.initials: A
authors.lastname: Silmi Moyano
authors.forename: Eva
authors.initials: E
authors.lastname: Aguilar Rivilla
authors.forename: Luis
authors.initials: L
authors.lastname: Resel Estévez
mesh_terms: D000368:Aged; D005260:Female; D006801:Humans; D007680:Kidney Neoplasms / Q000175:diagnosis*; D007685:Kidney Tubules, Collecting; D008297:Male; D008875:Middle Aged; D009392:Nephrectomy
vernacular_title: Carcinoma de los conductos colectores. Experiencia personal y revisión de la literatura.