Anal Atresias

《英文msh詞典》Anal Atresias
[入口詞] Anal Atresias
[主題詞] Anus,Imperforate
[英文釋義] 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.