The cause of imperforate anus is not clear. Many forms of imperforate anus are associated with other birth defects. It is a relatively common condition that occurs in about 1 out of 5,000 infants.
Who is at risk for imperforate anus?
The cause of imperforate anus is not clear. Many forms of imperforate anus are associated with other birth defects. It is a relatively common condition that occurs in about 1 out of 5,000 infants.