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肛门癌多发生在肛管或肛缘皮肤上，多为鳞状上皮癌，也有少数为基底细胞癌。生长在齿线的是肛管癌；生长在齿线下方是肛门周围癌或肛门缘癌。肛管癌多见于女性，肛门周围癌男性多见。常因肛瘘、痔手术瘢痕、湿疣等长期慢性刺激损伤引起。...</br> generated by yvsou girl

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