内胚窦瘤(Endodermal sinus tumor)即卵黄囊瘤(Yalk sac tumor)。恶性程度甚高。多见于青少年女性生殖腺,偶见于性腺外组织。Humtigton(1970)曾报告5例性腺外内胚窦瘤.原发于肝脏者 Hart(1975)及李其云(1978)曾有个案报告。我院于1982年收治1例报告如下:患者女,29岁。右上腹肿块4年,近半年来生长迅速,1982年7月10日住院。体温36.5℃,心率72,呼吸20,血压110/80。巩膜无黄染,全身表 Endodermal sinus tumor is a Yalk sac tumor. Very high degree of malignancy. More common in adolescent female gonads, occasionally outside the gonadal tissue. Five cases of gonadal endodermal sinus tumors have been reported by Humtigton (1970), and case reports of Hart (1975) and Li Qiyun (1978), both primary in the liver. A hospital in 1982 admitted to a report as follows: Patient female, 29 years old. Right upper quadrant mass 4 years, rapid growth in nearly six months, July 10, 1982 hospitalization. Body temperature 36.5 ℃, heart rate 72, breathing 20, blood pressure 110/80. Sclera no yellow dye, body surface