Congenital_mesoblastic_nephroma, Kidney Congenital Mesoblastic Nephroma • The tumor is light tan in color, similar to Wilms' tumor. Trabecular bands however, are noted on the cut surface, similar to that seen in leiomyomas. • The tumor gradually blends into the adjacent normal renal parenchyma. The tumor does not show a sharp peripheral border. Contrib. by: UCHC

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