肛管直肠周围脓肿是指肛管直肠组织内或其周围间隙内急性化脓性感染而形成的脓肿。多数脓肿在穿破或切开后形成肛瘘。近年来由于治疗方法不断地改进,一期治愈率亦逐渐提高。该病以21～40岁年龄组多发,男性高于女性。常以多种病菌混合感染。主要是大肠杆菌和拟杆菌,也有葡萄球菌、链球菌、变形杆菌和产气荚膜杆菌。偶见结核杆菌。一、脓肿是怎样发生与发展的? 肛管直肠周围脓肿多数起自肛管中部括约肌间的肛腺感染,感染延及肛腺,在肛腺末端形成肛腺脓肿,即原发性肛窦肛腺肌间脓肿。脓肿沿肌纤维或括约肌间隙向各方蔓延。向下蔓延形成肛门周围脓肿,这是临床上最多见的一种。向上蔓延形成高 Perianal rectal abscess refers to the anorectal tissue within or around the gap purulent infection and the formation of abscess. Most abscesses are perforation or incision to form an anal fistula. In recent years, due to continuous improvement of treatment, a cure rate also gradually increased. The disease in 21 to 40 age group multiple, men than women. Often mixed with a variety of bacteria infection. Mainly E. coli and Bacteroides, but also Staphylococcus aureus, Streptococcus, Proteus and Clostridium perfringens. Mycobacterium tuberculosis occasionally. First, the abscess is how the occurrence and development? Most of the anorectal abscess from the anal sphincter of the middle part of the anal gland infection, extended to the anorectal infection, the formation of the anal gland at the end of the abdomen, that is, the primary anal sinus anal Adenomyosis between abscess. Abscess along the muscle fibers or sphincter space spread to all parties. Spread down the formation of anus around the abscess, which is the most clinically a kind. Spread up to form high