毛发上皮瘤(triehoepithelioma)又名囊性腺样上皮瘤,可分为多发及单发两型。多发型病例一般与遗传有关,单发者则未见家族史。多见于青春期,好发于面部,为一坚实性丘疹,呈淡黄、淡红或正常皮色,损害通常无自觉症状,但有时可有轻度烧灼感或痒感。毛发上皮瘤一般认为是起源于多能的基底细胞,并有向毛发分化的趋势。是一良性肿瘤,癌变较少见。最近我科发现1例毛发皮瘤恶变患者,报告如下。 Hair epithelial tumors (triehoepithelioma), also known as cystic adenoid epithelioma, can be divided into multiple and single type. Cases with multiple hair styles are generally associated with heredity, while those with single hair styles have no family history. More common in puberty, occur in the face, for a solid papules, pale yellow, reddish or normal skin color, damage usually no symptoms, but sometimes there may be mild burning or itching. Hair epithelial tumors are generally thought to originate from pluripotent basal cells and have a tendency to differentiate into hair. Is a benign tumor, cancer is rare. Recently, our department found a case of malignant transformation of human hair follicles, the report is as follows.