两性母细胞瘤为来源于性细胞索的卵巢功能性肿瘤,临床少见,1930年由 Meyer报告首例。本文报告一例。患者,女性,18岁。因体检时发现下腹部肿块入院。发病以来除小腹部有胀感外,无不适。1973年患结节性甲状腺肿,至今未作治疗,无不适。17岁月经初潮,开始月经周期4～5个月,尔后则2～3月,经量少, Amphiphoblastoma is a ovarian tumor derived from the cytoplastic cord. It is rare in clinical practice and was first reported by Meyer in 1930. This article reports an example. Patient, female, 18 years old. Because of physical examination found lower abdominal mass admission. Since the onset of abdominal pain in addition to a sense of expansion, no discomfort. Nodular goiter in 1973, has not been treated, no discomfort. 17 years of menarche, menstrual cycle began 4 to 5 months, then 2 to 3 months, by the amount of less,