Anus, Imperforate

A congenital abnormality characterized by the persistence of the anal membrane, resulting in a thin membrane covering the normal ANAL CANAL. Imperforation is not always complete and is treated by surgery in infancy. This defect is often associated with NEURAL TUBE DEFECTS; MENTAL RETARDATION; and DOWN SYNDROME.

Year introduced: 1966(1964)

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Tree Number(s): C06.198.050, C16.131.314.094

MeSH Unique ID: D001006

Entry Terms:

• Imperforate Anus
• Anal Atresia
• Anal Atresias
• Atresias, Anal
• Atresia, Anal

All MeSH Categories
Diseases Category
Digestive System Diseases
Digestive System Abnormalities
Anus, Imperforate

All MeSH Categories
Diseases Category
Congenital, Hereditary, and Neonatal Diseases and Abnormalities
Congenital Abnormalities
Digestive System Abnormalities
Anus, Imperforate