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1987～1990年应用液氮冷冻治疗雀斑85例。其中用冷冻滚动法治疗全颜面雀斑7例,本组患者全为女性,年龄20～26岁,未婚,发病年龄6～8岁。诊断标准和适应征:全颜面弥漫分布无数小米粒大的淡褐色骈点,表面平滑,不突出皮面。强阳光照射,皮损明显,冬轻夏重。治疗方法:冷源为液氮。-196℃;浸冷式医用冷刀及皮肤科专用系列器械,取大、小号2支刀(大号刀为3cm,直径1cm,园柱状,小号直径
From 1987 to 1990, 85 cases of freckles were treated with liquid nitrogen cryotherapy. Among them, 7 cases were treated with frozen rolling method to treat full face freckles. The patients in this group were all female, aged from 20 to 26 years old and unmarried, with onset age of 6 to 8 years. Diagnostic criteria and indications: full face all over the distribution of numerous millet grains of light brown 骈 point, the surface is smooth, not prominent leather. Strong sunlight, skin lesions significantly, summer light summer heavy. Treatment: cold source of liquid nitrogen. -196 ℃; Cold-type medical cold knife and dermatology series of special equipment, take large and small 2 knife (large knife 3cm, diameter 1cm, cylindrical, small diameter