Figure 1.

Morphology of primary bladder rhabdomyosarcoma and bladder tumor with extensive rhabdomyosarcomatous and focal epithelial differentiation, H&E, 400x. A. Primary rhabdomyosarcoma with anaplasia. B, C, D. Bladder tumor with extensive rhabdomyosarcomatous differentiation and focal epithelial differentiation showing anaplasia 400x (B), focal epithelial differentiation (C), rhabdomyoblastic differentiation (D).