atresia

Definition: Atresia is a condition in which a body orifice or passage in the body is abnormally closed or absent.

Examples

 choanal atresia
 aural atresia
 laryngeal atresia
 esophageal atresia
 aural atresia
 extrahepatic biliary tract atresia / biliary atresia
  intestinal atresia

• duodenal atresia
• jejunal atresia
• ileal atresia

 urethral atresia
 vaginal atresia
 anal atresia
 valvular atresia

• pulmonary atresia
• tricuspid atresia

NB: For ovarian follicle atresia, atresia refers to the degeneration and subsequent resorption of one or more immature ovarian follicles.

See also

 visceral malformations