A yolk sac tumor that arises from the central nervous system and occurs during childhood. The disease is central nervous system endodermal sinus tumor (MONDO_0003401, a Monarch Disease Ontology term). Also known as: childhood central nervous system endodermal sinus neoplasm, childhood central nervous system endodermal sinus tumor, childhood central nervous system endodermal sinus tumour, paediatric central nervous system endodermal sinus neoplasm, pediatric central nervous system endodermal sinus neoplasm.