Stage y-III Childhood Malignant Kidney Neoplasm Excluding Renal Cell Carcinoma by Toronto Guidelines v2, International Society of Pediatric Oncology (SIOP) Protocol

**Semantic type:** Neoplastic Process

**Definition:** Incomplete excision of the tumor (gross or microscopic extension beyond the resection margins). Involved abdominal lymph nodes, including necrotic tumor or chemotherapy-induced changes. Tumor rupture before or intraoperatively. Tumor has penetrated the peritoneal surface. Tumor thrombi present at resection margins. Surgical biopsy prior to resection (does not include needle biopsy). (Childhood cancer staging for population registries according to the Toronto Childhood Cancer Stage Guidelines - Version 2. Cancer Council Queensland and Cancer Australia: Brisbane, Australia; 2021.)

**Synonyms:** - Renal tumor (excluding renal cell carcinomas) Stage y-III - Stage y-III Pediatric Malignant Kidney Neoplasm Excluding Renal Cell Carcinoma by Toronto Guidelines v2, International Society of Pediatric Oncology (SIOP) Protocol