There is no way to determine if a fetus has a perineal fistula prior to birth. Children born with the condition may exhibit the following symptoms after they are born:
- Not passing stool the first day or two after birth
- Passing stool through a misplaced opening
- Swollen belly
- Missing or misplaced anus
Causes and Risk Factors
The causes of congenital anorectal malformations are unknown; however, environmental factors such as drug use during pregnancy may play a part. The condition occurs in one out of every 5,000 births. Males are slightly more likely to develop the condition than females.