Molecular Characterization of Neuroblastic Tumor: Correlation With Clinical Outcome

This study collects and analyzes tumor tissue from children with neuroblastoma (a cancer that usually develops in the adrenal glands and commonly affects young children) to understand its molecular features and find better ways to predict and treat the disease. **You may be eligible if...** - Your child has been diagnosed with neuroblastoma or a related tumor (ganglioneuroma or ganglioneuroblastoma) - Tumor tissue or blood is available for molecular analysis - You consent to having your child's samples and clinical data included in the study **You may NOT be eligible if...** - Your child does not have a neuroblastic tumor - No tumor tissue or biological sample is available - You are unable or unwilling to provide informed consent Talk to your doctor to see if this trial is right for you.