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Imperforate anus

{{{Name|Imperforate anus}}}
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ICD-10 Q42.3
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ICD-9 {{ICD9
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}} An imperforate anus or anal atresia is a birth defectin which the rectumis malformed. Its cause is unknown.

Inhaltsverzeichnis

  • 1 Features
  • 2 Treatment
  • 3 Prognosis
  • 4 Epidemiology
  • 5 References

Features

There are several forms of imperforate anus:

  • A low lesion, in which the colonremains close to the skin. In this case, there may be a stenosis(narrowing) of the anus, or the anus may be missing altogether, with the rectumending in a blind pouch.
  • A high lesion, in which the colonis higher up in the pelvisand there is a fistulaconnecting the rectum and the bladder, urethraor the vagina.
  • A cloaca(named after the analogous orifice in amphibians), where the rectum, vagina and colon are joined into a single opening.

Imperforate anus usually presents along with other birth defects—spinalproblems, anal atresia, heartproblems, tracheoesophageal fistula, esophageal atresia, renalanomalies, and limbanomalies.

Treatment

Imperforate anus usually requires immediate surgeryto open a passage for faeces. Depending on the severity of the imperforate, it is either treated with a perineal anoplastyor colostomy.

Prognosis

With a high lesion, many children have problems controlling bowel function and most also become constipated. With a low lesion, children generally have good bowel control, but they may still become constipated.

Epidemiology

Imperforate anus has an estimated incidence of 1 in 5,000 live births. It is more common in boys than in girls.

References

  • Texas Pediatric Associates. "Imperforate anus." Retrieved 13 July, 2005.
  • MedLine Plus. "Imperforate anus." Retrieved 13 July, 2005.
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This article is licensed under the GNU Free Documentation License.
It uses material from the http://en.wikipedia.org/wiki/Imperforate+anus Wikipedia article Imperforate anus.

 
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