Keyhole defect

A keyhole defect may refer to a groove in the anal canal wall, which can occur after posterior midline fissurectomy or fistulotomy (surgical operations involving the anal canal), or with lateral internal anal sphincter defects. The keyhole defect is associated with minor degrees of fecal incontinence, allowing seepage of liquid stool or mucus.[1]

References
  1. Abcarian, Herand; Cintron, Jose; Nelson, Richard (2017). Complications of Anorectal Surgery: Prevention and Management. Springer. p. 115. ISBN 9783319484068. Retrieved 22 January 2018.


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