The majority of perianal abscesses occur as a result of infections within the anal glands. These mucous secreting glands reside either in the submucosa of the anal canal, the internal sphincter, or the intersphincteric space and their ducts enter the anal canal at the dentate line. Infection may be caused by inspissated stool or mucous obstructing the duct leading to stasis. Trauma and foreign bodies may also cause infection.
KeywordsAnal Canal Internal Opening Internal Sphincter Abscess Cavity External Opening
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