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肛裂是由于大便秘结,排便过度用力,引起肛管齿状线以下皮肤层裂开;或因肛管狭窄等造成损伤,继发感染后形成的小溃疡。方向与肛管纵轴平行,长0.5~1.0厘米,呈梭形或椭圆形。常有周期性剧痛、便血、便秘三大典型症状。肛管裂口、哨兵痔和乳头肥大常同时存在,称为“肛裂三联症”。其发病率在肛门直肠疾病中仅次于痔而居第二位,可发生于任何年龄,但多见于青壮年,男女发病率无差别。肛裂多为单发,多发肛裂仅占2.6%。绝大多数发生于肛管的后正中线上,约7%位于肛管前正中,位于肛管两侧者约为2%。其
Anal fissure is due to constipation, defecation excessive force, causing the anal canal dentate line below the skin layer split; or anal stenosis caused by damage, secondary to the formation of small ulcers after infection. The direction parallel to the longitudinal axis of the anal canal, 0.5 to 1.0 cm long, was spindle or oval. Often periodic pain, blood in the stool, three typical symptoms of constipation. Anal fissure, sentinel hemorrhoids and nipple hypertrophy often exist, known as “fissure triad ”. Its incidence in anorectal disease ranks second only to hemorrhoids, can occur at any age, but more common in young adults, the incidence of men and women no difference. Anal fissure mostly single, multiple anal fissure only 2.6%. The vast majority occurred in the posterior midline of the anal canal, with about 7% being located in the anterior midline of the anal canal and about 2% on both sides of the anal canal. its