An uncommon manifestation of renal cell carcinoma: contralateral spermatic cord metastasis

Renal cell carcinoma (RCC) is a common type of kidney cancer which demonstrates different symptoms such as uncommon metastasis and paraneoplastic syndrome. Description of the patient: A sixty year man was diagnosed as having a left renal cell carcinoma and underwent for nephrectomy surgery seven years ago. After seven years from the surgery, he referred with complain for feeling a mass in the right hemi-scrotum. In his pathology report, he was diagnosed for metastatic RCC in his contralateral spermatic cord and underwent for orchidectomy surgery.

This case is the first report for this type of metastasis. RCC can spread through retrograde flow from the renal vein to spermatic veins, so suggesting that a careful examination of the external genitalia should be performed in patients with RCC during the follow up period to exclude hidden metastases in these patients.