title: Tubulocystic renal carcinoma (low grade collecting duct carcinoma).
abstract: OBJECTIVE
  To report a case of tubulocystic renal carcinoma diagnosed in an adult, after a work up study for hematuria.
  
  
  RESULTS
  59-year-old male, CT scan was performed during a study for self-limited hematuria showing a 4.2 cm solid mass with areas suspicious of pseudocystic malignancy. Due to its debut with hematuria and renal sinus involvement laparoscopic radical nephrectomy was performed, establishing the diagnosis of tubulocystic carcinoma (low grade collecting duct carcinoma).
  
  
  CONCLUSIONS
  Tubulocystic carcinoma presents histological characteristics and a natural history that makes it different from the classic type of Bellini duct carcinoma, the latter being a rapidly growing tumor with poor prognosis which is usually diagnosed in advanced stages.
authors.affiliation: Urology Department, Hospital General Albacete, Spain. pedrocarrion1980@hotmail.com
authors.forename: Pedro
authors.initials: P
authors.lastname: Carrión López
authors.forename: Jesús
authors.initials: J
authors.lastname: Martínez Ruiz
authors.forename: Pedro Jesús
authors.initials: PJ
authors.lastname: Fernández Anguita
authors.forename: Carlos
authors.initials: C
authors.lastname: Martínez Sanchiz
authors.forename: Miguel
authors.initials: M
authors.lastname: Perán Teruel
authors.forename: Manuel
authors.initials: M
authors.lastname: Atienzar Tobarra
authors.forename: Julio A
authors.initials: JA
authors.lastname: Virseda Rodríguez
mesh_terms: D002292:Carcinoma, Renal Cell / Q000473:pathology* / Q000601:surgery*; D006417:Hematuria / Q000209:etiology; D006801:Humans; D007680:Kidney Neoplasms / Q000473:pathology* / Q000601:surgery*; D007685:Kidney Tubules, Collecting / Q000473:pathology* / Q000601:surgery*; D010535:Laparoscopy; D008297:Male; D008875:Middle Aged; D009392:Nephrectomy; D014057:Tomography, X-Ray Computed