Endodermal sinus tumour of Teilum.
D000008:Abdominal Neoplasms / Q000473:pathology*; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D013724:Teratoma / Q000473:pathology*; D014472:Umbilicus; D014817:Vitelline Membrane