rectal atresia
Last reviewed 01/2018
Rectal atresia associated with imperforate anus constitutes only 1% of all anorectal malformations. Externally, the neonate appears to have a normal anus, but the rectum is in fact degenerate or narrowed. The absence of the passage of meconium is the common feature.
A protective colostomy is formed initially. At 3-4 months of age, the anal sphincter is divided in the midline and the rectal pouch and anal canal are anastomosed in an end-to-end fashion.
The prognosis is excellent as the sphincteric mechanism and sensation of the anal canal are normal.