title: [Renal pelvis mucinous carcinoma. Case report].
abstract: OBJECTIVE
  There is some controversy in the terminology used for transitional cell tumors with mucinous differentiation.
  
  
  METHODS
  We report the case of a 50-year-old male with history of recurrent lithiasis whose radological tests discovered a heterogeneous renal pelvis lesion.
  
  
  RESULTS
  The histologic study of the lesions determined the diagnosis of transitional cell carcinoma of the renal pelvis with ample mucinous differentiation.
  
  
  CONCLUSIONS
  They are rare tumors in such location and the mucinous differentiation does not seem to influence prognosis.
authors.affiliation: Servicio de Anatomía Patológica del Hospital de Jerez de la Frontera, Sevilla, España. javiertorresgomez@yahoo.es
authors.forename: Francisco Javier
authors.initials: FJ
authors.lastname: Torres Gómez
authors.forename: Francisco Javier
authors.initials: FJ
authors.lastname: Torres Olivera
mesh_terms: D002288:Adenocarcinoma, Mucinous / Q000473:pathology*; D002295:Carcinoma, Transitional Cell / Q000473:pathology*; D006801:Humans; D007680:Kidney Neoplasms / Q000473:pathology*; D007682:Kidney Pelvis; D008297:Male; D008875:Middle Aged