Anorectal anomalies

Anorectal anomalies are congenital malformations of the anus and rectum. One anal anomaly, imperforate anus has an estimated incidence of 1 in 5000 births. It affects boys and girls with similar frequency. Anorectal anomalies are congenital malformations of the anus and rectum. One anal anomaly, imperforate anus has an estimated incidence of 1 in 5000 births. It affects boys and girls with similar frequency.