Cause Factors atresia

Atresia may be caused by several factors, among others:
1. Rupture of the upper digestive tract by rectal area so baby born without anus
2. The failure of growth in the womb when the baby was 12 weeks / 3 months
3. Disruption or cessation of development in the area embriologik colon, rectum and the distal tract urogenitalis, which occurred between the fourth to sixth week of gestation.
4. Incident + 1: 4000-5000
5. In closed are associated with other congenital devidasi such as: heart disease, esophageal atresia, spinal malformations, hydronephrosis, low birth weight.