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Anus, Imperforate MeSH Descriptor Data 2026


MeSH Heading
Anus, Imperforate
Tree Number(s)
C06.198.050
C16.131.314.094
Unique ID
D001006
RDF Unique Identifier
http://id.nlm.nih.gov/mesh/D001006
Scope Note
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.
Entry Term(s)
Anal Atresia
Atresia, Anal
NLM Classification #
WI 600
Public MeSH Note
66
History Note
66(64)
Date Introduced
1966/01/01
Last Updated
2012/07/03
Anus, Imperforate Preferred
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