Abstract
The occurrence of secondary renal cell carcinoma following chemoradiotherapy for nephroblastoma is relatively rare, especially microphthalmia transcription factor family translocation renal cell carcinoma (RCC). A 13-year-old Japanese male was referred to our department for treatment of a right kidney mass. The patient had undergone open left nephrectomy and adjuvant chemotherapy for nephroblastoma, 12 years before. Diagnostic imaging revealed a tumor in the right kidney and a lesion suspected to be metastasis in the left eighth rib. Partial nephrectomy by robot-assisted surgery for the right renal tumor and resection of the left eighth rib were performed. Pathologically, the renal tumor was diagnosed as translocation RCC, and the rib lesion demonstrated no evidence of malignancy. In this study, we present a rare case of secondary translocation RCC after successful treatment of nephroblastoma.