[Bellini duct carcinoma: report of two cases].
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.
Carrión López
Pedro
P
Servicio de Urología, Complejo Hospitalario de Albacete, Albacete, España. pedrocarrion1980@hotmail.com
Giménez Bachs
José Miguel
JM
Donate Moreno
María José
MJ
Pastor Navarro
Héctor
H
Cañamares Pabolaza
Luis
L
Segura Martín
Miguel
M
Atienzar Tobarra
Manuel
M
Salinas Sánchez
Antonio
A
Virsedo Rodríguez
Julio Antonio
JA
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