我科自1976年6月至1983年6月应用液氮冷冻治疗太田痣130例,中断治疗者10例(5次以内),坚持治疗者120例。总有效率达90%,取得满意效果。现将资料报告如下。病例组成120例中男30例,女90例;男女之比为1:3。年龄最大36岁,最小7岁,25岁以上者40例,平均年龄23岁,多为幼年发病,平均病期20年。治疗方法1、应用液氮低温治疗机Ⅳ～ Our department from June 1976 to June 1983 application of liquid nitrogen freezing 130 cases of nevus of Ota, interrupt treatment in 10 cases (less than 5 times), adhere to the treatment of 120 cases. The total efficiency of 90%, and achieved satisfactory results. The information is reported as follows. 120 cases were composed of 30 males and 90 females; the ratio of men to women was 1: 3. The oldest 36 years old, the youngest 7 years old, 25 years of age 40 cases, the average age of 23 years, mostly juvenile onset, the average duration of 20 years. Treatment 1, the application of liquid nitrogen cryogenic treatment machine Ⅳ ~