A condition in which the breastbone sinks into the chest.

Pectus carinatum usually is not noticed until a child has a growth spurt between ages 11 and 14 years. The main risk factor for it is having a family member with the condition.

Pectus carinatum symptoms can include chest wall pain or shortness of breath with exercise. The appearance of the chest could lead to social troubles or problems finding clothes that fit comfortably.

Pectus carinatum can be treated by wearing a device called a pressure brace. It applies pressure around the chest. Surgery to remove irregular cartilage in the breastbone also is an option for some people.