Contralateral solitary testis metastasis antedating renal cell carcinoma: a case-report and review.

A 56-year-old Caucasian smoker male patient underwent right orchiectomy and spermatic cord resection for intrascrotal transilluminating mass. Histology findings suggested diagnosis of metastasis from Renal Cell Carcinoma (RCC). After positive CT-scan for primary neoplasm, total left nephrectomy was accomplished. Patient referred to our institution and started interferon immunotherapy; nowadays, after 21 months is disease free and in good health. We have reviewed and summarized the international literature regarding testicular metastasis from renal cell carcinoma; this is the first case of histology-proved-RCC ("clear cell" type)-solitary-contralateral-testicular-recurrence antedating clinical evidence of the primary neoplasm, which underwent orchiectomy before nephrectomy.