For patients with metastatic renal cancer, prognostic factors defined in systemic therapy clinical trials stratify patients into good, intermediate, and poor risk groups with median survival varying from 4 to 13 months. These same factors also stratify patients whose renal cancers were initially resected completely and who then developed subsequent metastatic disease. Metastasectomy performed in low-risk patients was significantly associated with enhanced survival when compared with low-risk patients not undergoing metastasectomy. Two randomized, prospective clinical trials demonstrated a modest survival advantage of approximately 6 months for patients undergoing cytoreductive nephrectomy followed by interferon alfa-2b. Once effective systemic agents are developed, both metastasectomy and cytoreductive nephrectomy will play greater roles in consolidating clinical responses.