Cardiothoracic surgery (also known as thoracic surgery) is the field of medicine involved in surgical treatment of organs inside the thorax (the chest).Generally treatment of conditions of the heart (heart disease) and lungs (lung disease).
You may call them simply doctors. But most doctors have extra expertise in one type of medicine or another. In fact, there are several hundred medical specialties and subspecialties. Here are the most common types of doctors you'll likely see.
M.B.B.S, Dip in Clinical Pathology, M.Phil