肛周色素沉着性结节
题名: 肛周色素沉着性结节
摘要: Introduction Basalcell carcinoma (BCC) is the most common cutaneous malignancy. Ultraviolet lightis an important risk factor for the pathogenesis of BCCs; the vast majorityoccur in sun-exposed areas. BCCs occurring in the perianal or genital regionsa...

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