Pectus carinatum is an uncommon birth defect in which a child's breastbone (sternum) bulges out abnormally. Sometimes the deformity isn't noticeable until after the adolescent growth spurt. For most children and teens, the main issue with pectus carinatum is the way it looks. However, some will have respiratory problems, including increased colds and asthma. Wearing a brace is an effective treatment for children and teens. Older teens and adults will usually need surgery to correct the problem.
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