congenital absence of an anal opening due to the presence of a membranous septum (persistence of the cloacal membrane) or to complete absence of the anal canal. Syn: imperforate anus(1), proctatresia.
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congenital absence of an anal opening due to the presence of a membranous septum (persistence of the cloacal membrane) or to complete absence of the anal canal. Syn: imperforate anus(1), proctatresia.