Bladder metastasis of renal cell carcinoma. A case report and review of the literature

Renal cell carcinoma (RCC) metastasis to the urinary bladder is an exceedingly rare entity. In this paper, we present a case of a 78-year-old male presented in our department with painless gross hematuria, 2 years after he underwent a left open nephrectomy that revealed a clear cell RCC. Imaging examination revealed a sessile mass on the bladder wall. The patient underwent a transurethral resection of the bladder tumor with the histological diagnosis of clear cell RCC. Pathogenesis and possible routes of such a metastasis are not well-documented and no treatment of choice has been established yet.