Atresia

Atresia

Dr. KennedyAtresia is the absence of a normal opening or failure of a structure to be tubular. Atresia can affect many structures in the body, including

  • Anal atresia – congenital absence of a hole at the bottom end of the intestine. Also called imperforate anus.
  • Aortic atresia – congenital absence of the normal valvular opening into the aorta.
  • Biliary atresia – absence of the major bile ducts, causing jaundice.
  • Choanal atresia – congenital failure of one or both nasal passages to open.
  • Esophageal atresia – a birth defect in which part of esophagus is not hollow.
  • Intestinal atresia – obliteration of the hollow of the small intestine, involving the ileum (50% of cases) or the jejunum or duodenum.
  • Laryngeal atresia – congenital failure of the laryngeal opening to develop, resulting in partial or total obstruction at or just above or below the glottis.
  • Pulmonary atresia – congenital absence of the pulmonary valve opening in the heart.
  • Tricuspid atresia – congenital lack of the tricuspid valve opening.
  • Vaginal atresia – congenital occlusion of the vagina or subsequence adhesion (sticking together) of the walls of the vagina occluding it.

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