Imperforate Anus

National Organization for Rare Disorders, Inc.

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It is possible that the main title of the report Imperforate Anus is not the name you expected. Please check the synonyms listing to find the alternate name(s) and disorder subdivision(s) covered by this report.


  • Anal Atresia
  • Anal Membrane
  • Anal Stenosis
  • Anorectal Malformations
  • Ectopic Anus
  • High Imperforate Anus
  • Low Imperforate Anus
  • Perineal Anus
  • Rectoperineal Fistula

Disorder Subdivisions

  • None

General Discussion

Imperforate anus is a rare inborn abnormality characterized by the absence or abnormal localization of the anus. The rectum or the colon may be connected to the vagina or the bladder by a tunnel (fistula). With surgical correction, normal elimination can become possible.


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This is an abstract of a report from the National Organization for Rare Disorders (NORD). A copy of the complete report can be downloaded free from the NORD website for registered users. The complete report contains additional information including symptoms, causes, affected population, related disorders, standard and investigational therapies (if available), and references from medical literature. For a full-text version of this topic, go to and click on Rare Disease Database under "Rare Disease Information".

The information provided in this report is not intended for diagnostic purposes. It is provided for informational purposes only. NORD recommends that affected individuals seek the advice or counsel of their own personal physicians.

It is possible that the title of this topic is not the name you selected. Please check the Synonyms listing to find the alternate name(s) and Disorder Subdivision(s) covered by this report

This disease entry is based upon medical information available through the date at the end of the topic. Since NORD's resources are limited, it is not possible to keep every entry in the Rare Disease Database completely current and accurate. Please check with the agencies listed in the Resources section for the most current information about this disorder.

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Last Updated:  8/7/2007
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