BELLINI DUCT CARCINOMA - A CASE-REPORT

We report a rare case of Bellini duct carcinoma, which is an unusual v ariant of renal cell carcinoma, The patient, a 56-year-old man, was ad mitted to our hospital for detailed examination of a renal mass on the left side, He had no clinical symptoms such as gross hematuria or fla nk pain, Abdominal ultrasonography, computed tomography and magnetic r esonance imaging revealed a tumor 4 cm in diameter at the lower pole o f the left kidney, Selective renal angiography showed an avascular mas s lesion, We performed left transperitoneal radical nephrectomy with a preoperative diagnosis of left renal tumor, T2NOMO, The histopatholog ical diagnosis was Bellini duct carcinoma of papillary tubular type, L ectin histochemistry demonstrated positive staining with soyabean aggl utinin and peanut agglutinin, These findings supported our conclusion that the tumor might have originated from the Bellini duct epithelium. The patient currently remains disease-free, The pathogenesis and mana gement of this rare condition are discussed.