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Anal fistula is a chronic abnormal communication between the epithelialised surface of the anal canal and usually the perianal skin. An anal fistula can be described as a narrow tunnel with its internal opening in the anal canal and its external opening in the skin near the anus. Anal fistulae commonly occur in people with a history of anal abscesses. What is an abscess? You have either a perianal abscess, an infection that began in a mucous-secreting gland in the anal canal around your anus, or a pilonidal abscess,. An anal abscess is a painful condition in which a collection of pus develops near the anus. Most anal abscesses are a result of infection from small anal glands. The venous blood drains through the terminal branches of the superior rectal vein into the inferior mesenteric vein and portal system,. Anal canal cancers arise within the anal canal upto the anal verge and comprise about 85 of anal cancers. If you see your pups anal glands blocked, but theyre not bleeding or releasing pus, you can drain them yourself. Anal warts are irregular, verrucous lesions caused by human papilloma virus. Anal warts are usually transmitted by unprotected, anoreceptive intercourse. Anal warts may be asymptomatic, or may cause rectal discharge, anal wetness, rectal bleeding, and pruritus ani. Lesions can also occur within the anal canal, where they are more likely to create symptoms. The most common and simple treatment is for your doctor to drain the pus from the infected area. Anorectal abscess is believed to originate from an infection in the anal glands. In 1880, hermann and desfosses demonstrated branching of the anal glands within the internal sphincter, submucosa, and opening into the anal crypts. 13 they were the first to suggest that infection in the anal glands results in extension of sepsis through the intersphincteric space to the. The type of pelvic drains used are indeed heterogeneous among the published literature, including irrigation-suction or suction drain , closed-suction drain alone 1820, choice of irrigation-suction, silastic penrose, or jackson-pratt drain , closed-silastic with gravity drainage , or not even clearly described 10, 14, 15.