煤焦油产物对皮肤的致癌潜在作用是众所周知的,但焦油引起的皮肤肿瘤通常是从焦油角化症发展为鳞状细胞癌,多发性角化棘皮瘤也已有描述,而基底细胞癌则是罕见的。作者报告美国一名62岁至少接触天然煤焦油馏出物30年的男性患者,5年前面部出现日益增多细小而表面闪光的褐色丘疹,病损无痛不出血,同期在手背和右前臂出现二些硬皮的病变且色素沉着,他的阴囊并没 The potential carcinogenic effects of coal tar products on the skin are well known, but tar-induced skin tumors usually develop from keratosis to squamous cell carcinomas, multiple keratoepitheliomas have been described, and basal cell carcinomas are rare. The authors report that in the United States, a 62-year-old male patient exposed to natural coal tar distillates for at least 30 years showed a small but shiny surface papules five years ago with painless and painless bleeding on the face and bleeding on the back and right forearms over the same period Some crusty lesions and pigmentation, his scrotum did not