卵黄囊瘤(Yolk sac tumor)又称内胚窦瘤(Endodermal Sinus tumor),是一种由胚外结构——卵黄囊发生的高度恶性的生殖细胞肿瘤。好发于少女及年青妇女,予后很差,死亡率高达86～100%。由于本病极为罕见,国内外对此瘤报道甚少,一般对此还缺乏认识。现将我院1975年5月～1979年7月间收治的卵巢卵黄囊瘤7例报道如下,并对其发生、命名、治疗、预后等加以讨论,以期引起妇科临床及病理工作者的重视。 Yolk sac tumor, also known as Endodermal Sinus tumor, is a highly malignant germ cell tumor arising from the extraembryonic structure, the yolk sac. Occur in girls and young women, poor after the grant, the mortality rate as high as 86 to 100%. As the disease is extremely rare, very few reports of this tumor at home and abroad, the general lack of awareness of this. Now in our hospital from May 1975 to July 1979 were treated ovarian yolk sac tumor in 7 cases reported as follows, and its occurrence, naming, treatment, prognosis to be discussed in order to cause gynecological clinicians and pathologists attention.