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。鳞状细胞癌多发生于肛管及肛门周围,由肛管和肛门周围鳞状上皮发生,常因肛瘘、痔、手术瘢痕、湿疣、化脓性汗腺炎及潜毛囊肿长期慢性刺激损伤引起。肛门癌发生原因尚不清楚,文献介绍与 Anal cancer occurs in the anal canal or anal skin, mostly squamous cell carcinoma, but also a small number of basal cell carcinoma. Growing on the dentate line is anal canal cancer; growth below the dentate line is around the anus or the anal margin. Anorectal cancer more common in women, men and women around the anus more common. Squamous cell carcinoma occurs mostly in the vicinity of the anal canal and the anus. It occurs from the squamous epithelium around the anal canal and anus. It is often caused by long-term chronic irritation of anal fistula, hemorrhoids, surgical scars, genital warts, suppurative sweat glands, and hair follicles. The cause of anal cancer is not clear, the literature describes and