Disparity in Outcomes for Adolescent and Young Adult Patients Diagnosed With Pediatric Solid Tumors Across 4 Decades.

Objective: Cancer mortality is a leading cause of disease-related death in the adolescent and young adult (AYA) population. Compared with older and younger patients, AYA patients often experience worse cancer-specific outcomes. Here, we compare AYA and pediatric overall survival (OS) in the most common pediatric extracranial solid tumors. Materials and Methods: Using the US Surveillance, Epidemiology, and End Results database, we studied patients (age, 0 to 39 y) diagnosed with Ewing sarcoma, neuroblastoma, osteosarcoma, rhabdomyosarcoma, and Wilms tumor. Results: A total of 12,375 patients (age, 0 to 39 y) were diagnosed between 1973 and 2010 (8247 pediatric and 4128 AYA patients). AYA patients with rhabdomyosarcoma and Ewing sarcoma were more likely to present with metastatic disease. OS was significantly worse in the AYA cohort for all tumor types (P

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