Remarkable responses of metastatic renal cell cancer in multiple organs treated with alpha-interferon.

We report a case of renal cell carcinoma with metastases in the lungs, humerus and brain, which we treated with alpha-interferon. After a transperitoneal nephrectomy the patient received a series of intramuscular injections of alpha-interferon every 2 days. Two months after the initial therapy complaints of pain in the humeral bone gradually decreased and the palpable mass in the right brachial region disappeared completely. A computerized tomography scan revealed only the scar of the intracranial metastasis. Most of the pulmonary lesions disappeared 4 months later except for the metastasis at the apex of the left lung.