Metastatic ocular melanoma to the kidney 20 years after initial diagnosis

Metastatic tumors are the most common malignancies of the kidney. We report a rare case of isolated metastatic ocular melanoma to the kidney occurring 20 years after diagnosis. A 71-year-old man presented with gross hematuria. He had undergone left enucleation 20 years previously for ocular melanoma and had not required adjuvant therapy. A right upper pole mass was identified on computed tomography and was excised laparoscopically. Pathologic examination revealed metastatic melanoma. Metastatic melanoma to the kidney is rare. A high index of suspicion must be maintained in any patient with a renal mass and a history of a nonrenal malignancy.