Chest wall deformity refers to any abnormal shape or structure of the chest wall, which can affect the ribs, sternum, and surrounding tissues. Common types include pectus excavatum, where the chest appears sunken, and pectus carinatum, characterized by a protruding chest. These conditions can vary in severity and may impact lung function and physical appearance. The causes of chest wall deformities can be congenital, meaning they are present at birth, or acquired due to conditions like scoliosis or trauma. Treatment options may include physical therapy, braces, or surgical interventions, depending on the severity and symptoms experienced by the individual.