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肛管直肠脱垂又称脱肛。是肛管直肠粘膜,直肠全层和乙状结肠向下移位。脱出肛门外叫外脱垂,脱垂的部分在直肠壶腹内成套叠,外面看不到叫内脱垂。按脱垂程度分为3级。第1级是肛管或直肠粘膜成环形,向下移位。第2级是直肠的各层(包括粘膜层、肌层、浆膜层)全部向下移位形成直肠套叠。第3级是乙状结肠直肠套叠,脱垂部分很大,肛管外翻。第1级脱垂病人感到难受,粘膜分泌大量粘液,造成会阴沾污,引起皮肤糜烂,
Anorectal prolapse, also known as rectal prolapse. Is the anal canal mucosa, the entire rectum and sigmoid colon shift down. Prolapse from the anus outside the prolapse, prolapse of the part of the rectum ampulla nested within the outer can not see called prolapse. According to the degree of prolapse is divided into 3 levels. The first level is the anal canal or rectal mucosa into a ring, downward shift. Level 2 is the rectum of the layers (including the mucosa, muscle, serosa) all downward shift to form the rectum. Level 3 is sigmoidorectal intussusception, prolapse, a large part of the anal canal valgus. Grade 1 patients feel uncomfortable prolapse, mucus secretion of a large number of mucus, causing perineal contamination, causing skin erosion,