Anaplastic Wilms' Tumor and Other Clinically Aggressive Childhood Renal Neoplasms: Ultrastructural and Immunocytochemical Features

Abstract

The ultrastructural and immunocytochemical findings in a series of 32 rarely encountered childhood renal malignancies are reviewed. The discussion includes anaplastic Wilms' tumors, renal clear cell sarcomas, rhabdoid tumors, carcinomas, sarcomas, neuroendocrine tumors, and lymphomas. An attempt is made to assess the relative merits of these two techniques in the differential diagnosis of these often troublesome lesions.

Key Words:

• Wilms' tumor
• renal tumors
• electron microscopy
• rhabdoid tumors