Pectus Excavatum is a congenital condition where the breastbone, or sternum, is sunken into the chest, creating a hollowed appearance. This condition can vary in severity and may affect the heart and lungs, potentially leading to breathing difficulties or reduced exercise tolerance in some individuals. The exact cause of Pectus Excavatum is not fully understood, but it is believed to involve abnormal growth of the cartilage connecting the ribs to the sternum. Treatment options range from observation in mild cases to surgical intervention for more severe cases, aimed at improving both function and appearance.