《英文msh词典》Atresias,Anal
[入口词] Atresias,Anal
[主题词] Anus,Imperforate
[英文释义] 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.