Bilateral multifocal renal cell carcinoma

Bilateral synchronous renal cell Carcinomas occur in approximately 1-3% of all patients with RCC. Ultrasound and contrast-enhanced CT scan are the most useful tests for diagnosing and staging. US has an advantage over CT in determination of nature of the lesion [solid/cystic]. CT is more sensitive in evaluation of lesion size and detection of calcification and necrosis. CT also has an advantage over US in evaluation of perinephric extension, adjacent organ infiltration and regional lymphadenopathy. Both US and CT are equally sensitive in detection of IVC thrombus