A condition in which the breastbone sinks into the chest.

Pectus excavatum is often noticeable shortly after birth and typically worsens during the adolescent growth spurt. It's more common in boys. It may be associated with genetic or connective tissue diseases. Serious cases of pectus excavatum can eventually interfere with the function of the lungs and heart.

In severe cases, pectus excavatum can look as if the center of the chest has been scooped out, leaving a deep dent. If the breastbone compresses the lungs or heart, symptoms may include difficulty tolerating exercise, fatigue, dizziness, chest pain, wheezing or coughing, and recurring respiratory infections.

Physical therapy or corrective surgery can help.