葡萄胎在欧美各国发病率不高,但在我国及亚洲各国却较多见。根据1947～1956年我国各地44个医院住院人数的统计,葡萄胎占孕妇人数的1/143.5。由于葡萄胎患者一般均住院治疗,而流产及正常分娩则不一定住院,因此实际发病率要比上述比率为低,确切的发病率尚有待调查统计。葡萄胎在一小部分患者中可发生局部浸润或血行转移,水泡可侵入子宫肌层,成为破坏性葡萄胎,又称浸润性葡萄胎或恶性葡萄胎;水泡亦可侵入血管,沿静脉转移至肺部或阴 Mole in Europe and the United States, the incidence is not high, but in our country and in Asia are more common. According to the statistics of inpatients from 44 hospitals across China from 1947 to 1956, mole accounted for 1 / 143.5 of the pregnant women. Because hydatidiform mole patients are generally hospitalized, and abortion and normal childbirth are not necessarily hospitalized, so the actual incidence rate than the above ratio is low, the exact incidence yet to be investigated statistics. Mole may occur in a small part of patients with partial infiltration or hematogenous metastasis, blisters can invade the myometrium, a destructive hydatidiform mole, also known as invasive hydatidiform mole or malignant hydatidiform mole; blisters can also invade the blood vessels, along the vein to Lung or Yin