Pediatric metanephric tumors: A Single-Centre Clinical Observation

Objective: To explore the clinical characteristic, diagnoses and treatments of pediatric metanephric tumors in a single-center study. Methods: From January 2006 to January 2024, thirteen patients were diagnosed with metanephric tumors, including eight metanephric adenomas (MA) and five metanephric stromal tumors (MST). Imaging features, surgical approaches, pathological findings, and prognoses were retrospectively reviewed. Results: Two MSTs underwent nephrectomy, while three MSTs underwent nephron-sparing surgery (NSS). Similarly, two MAs underwent nephrectomy, and six MAs underwent NSS. One case of MA combined with papillary renal cell carcinoma (PRCC) was treated with chemotherapy post-surgery. All patients were followed up with no recurrence or adverse events. Conclusions: We summarize the initial experience of a single center on the clinical presentation, surgical approach and long-term follow-up of metanephric tumors.