A cardiothoracic surgeon is a medical doctor who specializes in surgical procedures involving the heart, lungs, and other organs in the chest. They perform operations to treat conditions such as heart disease, lung cancer, and congenital heart defects. These surgeons undergo extensive training, including medical school and several years of residency in general surgery and cardiothoracic surgery. In addition to performing surgeries, cardiothoracic surgeons also work closely with other healthcare professionals, such as cardiologists and pulmonologists, to provide comprehensive care for patients. They often use advanced techniques and technologies to ensure the best possible outcomes for their patients.