Bellini duct carcinoma: two case reports.

UNLABELLED We report two rare cases of Bellini duct carcinoma, a rare variant of renal cell carcinoma. CASE 1 The patient, a 73-year-old female, was admitted to the hospital for macroscopic hematuria and right flank pain. She was diagnosed to have a stage IV Bellini duct carcinoma. There was a progression of the disease despite chemotherapy. She died 21 months later. CASE 2 The patient, an 81-year-old male, was admitted to the hospital for generalized fatigue, weight loss and left flank pain. He was diagnosed to have a stage IV Bellini duct carcinoma. The patient was treated with chemotherapy; he died six months later. We report the clinicopathological features of two cases of Bellini duct carcinoma in order to contribute to the related literature of this rare disease.