[A case of metastasis to the seminal vesicle of renal cell carcinoma].

A case of metastasis to the seminal vesicle of renal cell carcinoma is reported. A 60-year-old man was referred to our department for evaluation of intermittent hematospermia and asymptomatic macrohematuria for about 2 years. He had a left radical nephrectomy for localized renal cell carcinoma 5 years ago. Panendscopy showed a little bleeding of posterior urethra, but there were no abnormal images of upper urinary tracts. Two years later he had asymptomatic macrohematuria again and panendscopy showed swelling and bleeding of verumontanum. Transurethral resection of verumontanum revealed clear cell carcinoma histopathologically and CT revealed seminal vesicle or prostate tumor, then total cystectomy was performed. Pathological examination indicated metastasis to siminal vesicle of renal cell ccarcinoma. There has been no report of metastasis to seminal vesicle of renal cell carcinoma in literature. This is the first case in the world.