Renal cell carcinoma metastatic to the orbit: a clinicopathologic report.

Renal cell carcinoma (RCC) is a tumor of middle-aged men that metastasizes to the lung, liver, and bone. Few cases of RCC metastatic to the orbit have been reported. When this tumor spreads to the orbit, the orbital metastasis is likely to be the first indication of the cancer. We report the case of a 53-year-old man with widespread metastatic RCC whose first sign of disease was a metastatic orbital tumor. External and ocular examination and computed tomographic and histopathologic findings are described. The clinical characteristics, treatment, and prognosis of metastatic RCC are discussed.