1. Presented by George Netto, M.D. and prepared by Zarir E. Karanjawala, M.D., Ph.D.

A 21 year old gentleman presented with gross hematuria. He was found to have bilateral renal neoplasms. During a right radical nephrectomy, a needle core biopsy from a left renal mass was performed. Three tumors were identified in the right kidney with identical morphology. The Left renal biopsy is also shown below.

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