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外阴上皮内非瘤样病变(Nonneoplastic epithelial disorders of vulvar,NNEDV)是指女性外阴皮肤和黏膜组织色素改变和变性的一组慢性疾病。1987年国际外阴疾病研究协会(the international
Nonneoplastic epithelial disorders of vulvar (NNEDV) refers to a group of chronic diseases in which the pigmentation and degeneration of vulva skin and mucosa are altered in women. 1987 International Society of Vulvar Diseases (the international