The most important etiologic factor of basal cell carcinoma, which is the most frequent primer skin cancer, is ultraviolet light exposure. Typically it occurs in areas of chronic sun exposure. Synchronous multiple tumors are exceptional and if present, they are commonly associated with a syndrome. In a 58 years-old woman, ulcerated and crusted, macular and nodular lesions on neck and scalp were excised and pathologic examination of all lesions revealed as basal cell carcinoma. No accompanying syndromic finding was found. Non-syndromic multiple basal cell carcinomas are rare in the literature. Since increasing effect of ultraviolet light with aging may cause multiple tumors, the follow up of these patients are significant.
Multiple basal cell carcinoma, etiology, sun light exposure