液氮治疗太田母斑

TREATMENT OF OTA NEVUS WITH LIQUID NITROGEN

12年来,利用液氮治疗太田母斑,此法与干冰比较有如下优点。(1)由于温度很低,疗效显著,能减少治疗次致,仅为干冰治疗次数的一半以下。(2)术后瘢痕不显著,很少发生色素脱失现象,尤其是对干冰治疗无效的重症患者也有良好效果。擦皮术的目的是除去真皮下的色素细胞内的黑素颗粒(melanosome),使渗出液容易流出,所以只在首次浅浅地施行,同时也并用一种附有包裹一半硅橡胶的特殊脱毛针,用来破坏皮下残余的黑色素细胞。术后用牙科的硅胶类合成橡胶印模材料印取术后皮肤性状的模型,所显现出的皮野其皮沟与正常皮肤之间并无差异。用此法治疗太田母斑是非常有效的。

For twelve years,we have used liquid nitrogen in the treatment of Ota nevus (nevus fusco-caerule-us ophthalmomajillaris).Compared with the dry ice treatment,this method has the following adventages:(1) its very low temprature has a significant therapeutic effect and the number of treatment can be reduced to only half of what is needed in dry he treatment;(2) no apparent scar is left after treatment and depigmentation is rare.This method is also very effective for severe nevi that can not be cured by dry ice.Dermabrasion is used to remove melanosome of the epidermis and to facilitate the out-flow of exudate,therefore it is carried out at first superficially.At the same time,a special depi-lation needle with its half length covered by a silicone rubber sheath is used to destroy the remaining melanocytes under the skin.The skin impression taken after operation with dental synthetic rubber impression material shows the same skin furrows as those bf normal skin.This method is very effective in the treatment of Ota nevus.