毛发上皮瘤此肿瘤系起源于毛发的良性肿瘤。一般认为本病可能起源于多潜能的基底细胞，是向毛发结构分化的良性肿瘤。其分化程度较基底细胞上皮瘤高。
结果显示角化型基底细胞癌组有异倍体16例，毛发上皮瘤组30例均为二倍体。
The results showed 16 of 30 specimens from keratinized type of basal cell epithelioma were aneuploid and 30 specimens from trichoepithelioma were all diploid.
由于还不清楚多发性毛发上皮瘤的发病机制，因此目前多发性毛发上皮瘤还没有有效的治疗方法。
There is still no effective cure for multiple familial trichoepithelioma because mechanism of the disease is still unknown.
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