Isolated testicular metastases from renal cell carcinoma.

Testicular metastasis from renal cell carcinoma is very rare. Herein we report a case of left-side renal cell carcinoma initially diagnosed to be clinically stage II, which developed left-side testicular metastases 2 months following radical nephrectomy. High inguinal orchiectomy was carried out. The patient was asymptomatic 2 months later. Although renal vein involvement in renal cell carcinoma is common and its extension into inferior vena cava well documented, tumour invasion of spermatic veins is rare.