a developmental anomaly of the anus in which there is no anal opening
absence of an external opening from the rectum/intestinal tract. Surgery is needed to allow the infant to pass feces.
caused by improper development of the baby's rectum and anus during pregnancy. The opening at the end of the rectum or anus is absent, so stool cannot leave the body normally.
A birth defect in which the anal canal fails to develop.
An imperforate anus or anal atresia is a birth defect in which the rectum is malformed. Its cause is unknown.