ovarian yolk sac tumor, polyvesicular vitelline pattern https://www.malacards.org/card/polyvesicular_vitelline_pattern_ovarian_yolk_sac_tumor polyvesicular vitelline pattern ovarian yolk sac tumor polyvesicular vitelline pattern ovarian yolk sac tumour MEDGEN:309521 NCIT:C39987 ovarian yolk sac tumor, polyvesicular vitelline pattern GARD:0023726 MONDO:0003907 UMLS:C1518749 A yolk sac tumor that arises from the ovary and is characterized by the presence of multiple dilated spaces lined by cells that resemble mesothelial cells. The dilated spaces coexist with columnar epithelial tissues. DOID:6514 ovarian yolk sac tumor