An angiosarcoma occurring in childhood. The disease is Monarch Disease Ontology term MONDO_0003022 (pediatric angiosarcoma). Also known as: angiosarcoma (disease) of childhood, childhood angiosarcoma, childhood angiosarcoma (disease), childhood hemangiosarcoma, paediatric angiosarcoma (disease), paediatric hemangiosarcoma, pediatric angiosarcoma (disease), pediatric hemangiosarcoma.