October, The anus is that part of the intestinal tract that passes through the muscular canal of the pelvis and anal sphincters. It is the final orifice through which stool passes out of the body. In adults, the anus is 4 to 5 centimeters long. The lower half of the anal canal has sensitive nerve endings. There are blood vessels under the lining, and in its mid portion there are numerous tiny, anal glands.
Anorectal Abscess - Digestive Disorders - Merck Manuals Consumer Version
An anorectal abscess is a pus-filled cavity caused by bacteria invading a mucus-secreting gland in the anus and rectum. Bacteria infect a blocked gland in the anus or rectum and create an abscess. The infection produces pus and causes pain and swelling. The diagnosis is based on an examination and the results of imaging tests if needed.
How the anal gland orifice could be found in anal abscess operations
Humans[ edit ] Diagram showing anal canal , with dentate line , along which anal crypts open. Anal glands drain into anal crypts via anal ducts. Note also intersphincteric plane where some of these glands are located.
They have beleaguered patients and physicians for millennia. A thorough understanding of the anatomy and pathophysiology of the disease process is critical for optimal diagnosis and management. Abscess management is fairly straightforward, with incision and drainage being the hallmark of therapy. Fistula management is much more complicated. It requires striking a balance between rates of healing and potential alteration of fecal continence.