Absence of a normal opening or normally patent lumen. Syn: clausura.
Origin
anal atresia
aortic atresia
biliary atresia
bronchial atresia
choanal atresia
esophageal atresia
atresia folliculi
intestinal atresia
atresia iridis
laryngeal atresia
pulmonary atresia
tricuspid atresia
vaginal atresia