<unk>  is the congenital absence or complete closure of a portion of the lumen of the duodenum. Intestinal atresia, including<unk> , may be classified into four subtypes: Type I, Type II, Type III, and Type IV. Type I is the most common subtype which involves the complete mucosal membrane, with muscularis and serosa remaining intact. The prevalance of<unk>  is 0.1 to 0.4 per 100000. It commonly affects neonates and has a male to female ratio of 2 to 1. The symptoms of<unk>  usually develop in the first 48 hours of life, and start with symptoms such as bilious vomiting in 80% of the cases. Prognosis is generally very good, and the survival rate of patients with<unk>  is approximately 90%.
Duodenal atresia
Intestinal atresia
Choanal atresia
Situs inversus
Esophageal atresia
Meconium ileus
Intestinal malrotation
Imperforate anus