Congenital Mesoblastic Nephroma

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. (Description By:H. Yamase, M.D. ) (Image Contrib. by: UCHC )