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Sonographic Findings in Skeletal Muscle Metastasis From Renal Cell Carcinoma

The skeletal muscle is an unusual site of metastasis for renal cell carcinoma (RCC). In large autopsy series, only 0.4% of patients with RCC had skeletal metastases. Renal cell carcinoma metastasis can occur late in the course of the disease, creating a diagnostic challenge. In this report, we describe a patient with skeletal muscle metastasis from RCC that appeared 14 years after nephrectomy. We describe the sonographic findings, which, to our knowledge, have not been previously reported.