Doctor Derek Shepherd

        In Medicine, a surgeon is a specialist in surgery. Surgery is a broad category of invasive medical treatment that involves the cutting of a body, for a specific reason such as the removal of diseased tissue or to repair a tear or breakage. Surgeons may be physicians,  dentists, podiatrists or veterinarians.

        Cardiovascular surgery is a frequent surgery that is done to treat complications of ischemic heart disease, correct congenital heart disease, or treatvalvular heart disease from various causes including endocarditis, rheumatic heart disease and atherosclerosis. It also includes heart transplantation.

        Neurosurgery is the medical specialty concerned with the prevention, diagnosis, treatment, and rehabilitation of disorders which affect any portion of the nervous system including the brain, spinal cord, peripheral nerves, and extra-cranial cerebrovascular system.