During weeks 6 and 7 of gestation, the GI tract becomes occluded then recanalizes during weeks 8 to 10<unk>  is thought to result from failure of recanalization
Often associated with other malformations such as biliary atresia or gallbladder agenesis
May also be associated with cardiac, renal, or vertebral abnormalities
About a quarter of patients born with<unk>  have Down syndrome
Duodenal atresia
Malrotation with volvulus
Choanal atresia
Hirschsprung's disease
Pyloric stenosis
Meconium ileus
Other intestinal atresia
Biliary atresia