Renal cell carcinoma is unusual in children. We report a case of anaplastic renal cell carcinoma arising in a 7‐year‐old girl following treatment for Stage III neuroblastoma. The renal cell carcinoma has unusual histologic and ultrastructural features, which are discussed. The case is further unusual in that few children with advanced stage neuroblastoma survive long enough to develop second malignant neoplasms. © 1995 Wiley‐Liss, Inc.
- anaplastic renal cell carcinoma
- second malignant neoplasms