Chest deformities refer to structural abnormalities in the chest wall, which can affect the shape and function of the rib cage. 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 breathing and physical activity. While many chest deformities are present at birth, they can also develop during childhood or adolescence. Treatment options range from observation for mild cases to surgical interventions for more severe deformities. Early diagnosis and management can help improve both physical appearance and respiratory function.