TREATMENT OF OSSEOUS METASTASES SECONDARY TO RENAL-CELL CARCINOMA

Osseous metastases occur in 25 to 50% of the patients with metastatic renal cell carcinoma. We retrospectively reviewed our experience with 14 patients who underwent 20 palliative orthopedic procedures for treatment of bony metastases secondary to renal cell carcinoma. Of the patients 6 presented after nephrectomy (group 1) and 8 presented initially with osseous metastases (group 2). Only 1 of the group 2 patients underwent adjunctive nephrectomy. Overall, 5 of 14 patients (36%) presented with fracture and 9 of 14 (64%) presented with impending fracture. Five patients required multiple procedures. A total of 7 lesions had been previously treated with external radiation. Of the 20 orthopedic procedures 17 (85%) resulted in significant functional improvement and 18 (90%) resulted in significant relief of pain. There were 4 major complications in the series, including 2 culminating in amputation. Average survival after palliative orthopedic procedures was 22 months (range 7 to 64 months) with a 1-year survival rate of 58%. Orthopedic palliation of osseous metastases from renal cell carcinoma is effective, and our experience indicates that the majority of renal cancer patients with bone metastases will survive long enough to benefit from palliative orthopedic procedures.