A papillary adenocarcinoma of the rete testis in a 67‐year‐old man is presented. The tumor was localized in the rete testis, showing no involvement of the adjacent testicular parenchyma or the epididymis. The tumor cells manifested a transition to the normal epithelial cells of the rete testis. The electron microscopic features of this tumor are compared with those of the normal epithelial cells of the rete testis. Cancer 50:134–138, 1982.

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.

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