Rare solitary metastasis to subcutaneous tissue from choriocarcinoma of testis.

A rare case of solitary metastasis to subcutaneous tissue from choriocarcinoma of the testis which was predominantly seminoma is reported. The propensity for vascular route of metastasis of this tumor type producing the patient's clinical picture is presented. The human beta chorionic gonadotropin tumor marker elevation to 4,200 units preoperatively fell to normal two weeks postoperatively, suggesting a solitary metastatic site with total tumor extirpation. Nevertheless, it seemed prudent to give chemotherapy because the nature of the metastatic route suggested other microscopic sites of metastasis. The prognosis of this highly malignant neoplasm, while poorest of the array of testis tumors, has improved dramatically with the advent of effective chemotherapy.