Figure 1
From: Extrarenal nephroblastomatosis in children: a report of two cases
Testicular nephrogenic rest in the inguinal canal. A. The paratesticular mass is a complex containing fibrous tissues and multiple nephrogenic foci (hematoxylin and eosin; ×40). B. Nephrogenic foci are composed of immature glomeruli, tubules and blastemal cells (hematoxylin and eosin; ×400). C. The mass in testis contains nephrogenic foci adjacent to seminiferous tubules and rete testis (hematoxylin and eosin; ×40). D The lesion consistes of undifferentiated blastemal tissue, abortive glomeruli and dysplastic tubules with intervening testicular tissue (hematoxylin and eosin; ×400).