基底细胞癌(basalcellcarcinoma,BCC)是最常见的皮肤恶性肿瘤,占所有皮肤肿瘤的65%～75%〔1〕。起源于表皮及皮肤附属器的基底细胞,生长缓慢,局部浸润生长,BCC很少转移,但局部侵犯可引起严重的外貌损伤及功能丧失,甚至威胁生命。笔者从流行病学,病因,临床、病理表现,分子生物学 Basal cell carcinoma (BCC) is the most common skin cancer, accounting for 65% to 75% of all skin tumors [1]. Basal cells, which originate from the epidermis and skin appendages, grow slowly, grow locally, and rarely metastasize to BCC, but local invaders can cause severe cosmetic damage and loss of function, and can even threaten life. The author from epidemiology, etiology, clinical, pathological manifestations, molecular biology