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Intestinal atresia is a malformation where there is a narrowing or absence of a portion of the intestine. This defect can either occur in the small or large intestine. == Types of intestinal atresia == The different types of intestinal atresia are named after their location: *Duodenal atresia - malformation of the duodenum, part of the intestine that empties from the stomach *Jejunal atresia - malformation of the jejunum, the second part of the intestine extending from the duodenum to the ileum *Ileal atresia - malformation of the ileum, the lower part of the small intestine *Colon atresia - malformation of the colon Duodenal atresia has a strong association with Down syndrome. It is the most common type, followed by ileal atresia. An inherited form - familial multiple intestinal atresia - has also been described. This disorder was first reported in 1971.〔Mishalany HG, Der Kaloustian VM (1971) Familial multiple-level intestinal atresia: report of two siblings. J Pediat 79: 124〕 It is due to a mutation in the gene TTC7A on short arm of chromosome 2 (2p16). It is inherited as an autosomal recessive gene and is usually fatal in infancy. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Intestinal atresia」の詳細全文を読む スポンサード リンク
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