Abstract
A case of Bellini duct carcinoma is reported. A 75-year-old man reporting occult blood in urine and pyuria, was examined and a left renal tumor found via ultrasonography (US), drip infusion pyelography (DIP), and computed tomography (CT). Right radical nephrectomy, based on a diagnosis of hypovascular renal cell carcinoma, was done. Gross examination showed a white-gray tumor centered in the renal medulla and infiltrating into the renal cortex. Histologically, tumor cells showed a papillary tubular structure, and partial differentiation to transitional cells. Cells had eosinophilic cytoplasm and large irregular nuclei. We diagnosed this patient with Bellini duct carcinoma. Because of the patient's age and wishes, no additional therapy was given. He developed vertebrometastasis 2 months postoperatively and died from carcinoma.
