disease has location yolk sac tumor ovarian yolk sac tumor https://www.malacards.org/card/ovarian_endodermal_sinus_tumor endodermal sinus neoplasm of ovary ovarian yolk Sac neoplasm ovarian endodermal sinus neoplasm EFO:1000437 germ cell endodermal sinus tumor of the ovary ovarian germ cell endodermal sinus tumor MEDGEN:83415 yolk Sac neoplasm of the ovary GARD:0024374 yolk sac tumour yolk Sac tumour of the ovary endodermal sinus tumor of ovary yolk sac tumor endodermal sinus tumor of the ovary yolk Sac tumour of ovary germ cell endodermal sinus tumour of ovary ovary yolk sac tumour ovarian endodermal sinus tumor germ cell endodermal sinus neoplasm of the ovary DOID:5350 yolk Sac tumor of ovary endodermal sinus neoplasm of the ovary germ cell endodermal sinus tumor of ovary NCIT:C8107 ovarian germ cell endodermal sinus tumour SCTID:254876005 germ cell endodermal sinus tumour of the ovary ovarian yolk sac tumor ovary yolk sac tumor yolk Sac tumor of the ovary MONDO:0006344 yolk Sac neoplasm of ovary ovarian germ cell endodermal sinus neoplasm UMLS:C0346188 germ cell endodermal sinus neoplasm of ovary endodermal sinus tumour of the ovary A usually rapidly growing malignant germ cell tumor arising from the ovary. It usually occurs in children and adolescents. Signs and symptoms include abdominal pain and a large abdominal or pelvic mass. The serum alpha-fetoprotein is almost always elevated preoperatively. Morphologically, there is marked heterogeneity due to numerous patterns of differentiation coexisting in the same tumor. The most common pattern is reticular. ONCOTREE:OYST malignant non-dysgerminomatous germ cell tumor of ovary ovary