Atresia (ah-TREE-zhah) is a condition in which a baby is born with a
missing or closed valve or tube somewhere in his or her body. Atresia can affect many
body parts, including the nose, ears,
organs, digestive tract,
More to Know
Air, blood, bodily fluids,
and waste products travel throughout the body in a system of vessels, tubes, and chambers
that are often separated by valves. When a child is born with atresia, it means that
a valve is missing or a tube is closed off. This interrupts the normal flow of blood,
fluid, waste, or air, which can lead to a number of complications.
Most kinds of atresia are serious and can be fatal if they go untreated. Treatment
usually involves surgery while the child is still an infant.
The types of atresia are named for the body parts they affect. Biliary atresia
is a defect in the liver or bile system. Choanal atresia is a defect of the nasal
passages (choana). Anal atresia (imperforate anus) and esophageal atresia are defects
of the digestive tract. Tricuspid atresia, pulmonary atresia, and aortic atresia involve
valves in the heart.
Keep in Mind
Most kinds of atresia can be treated successfully with surgery; some cases may
require more than one operation.
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