外毛根鞘癌（附９例报告）中山医科大学口腔系（５１００８０）冯崇锦，陈光晔，陈小华外毛根鞘癌是一种少见的毛源性肿瘤，来源于毛囊外根鞘。由于对本病的认识不足，临床往往难于作出正确诊断，常误诊为角化性鳞癌、基底细胞癌、皮脂腺囊肿或其他皮肤附件肿瘤等。我们自... Outer root sheath cancer (a report of 9 cases) Department of Stomatology, Sun Yat-sen University of Medical Sciences (510080) Feng Chongjin, Chen Guangyao, Chen Xiaohua External hair root sheath cancer is a rare hair-derived tumor derived from the outer root sheath of hair follicles. Due to the lack of understanding of the disease, the clinical often difficult to make the correct diagnosis, often misdiagnosed as keratinizing squamous cell carcinoma, basal cell carcinoma, sebaceous cysts or other skin attachment tumors. We are from...