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Incidental Finding of Renal Cell Carcinoma

Renal cell carcinoma, the most common renal neoplasm, often goes undetected since it typically remains asymptomatic. In some cases, renal cell carcinoma invades the renal vein and infiltrates the inferior vena cava. Understanding of this natural history will enable sonographers to evaluate a patient further when a thrombus in the inferior vena cava or renal vein is visualized. This case report presents a renal cell carcinoma that was incidentally detected secondary to a thrombosed inferior vena cava and validates the importance of evaluating the kidneys in such cases.