A surgeon is a specialist who treats illnesses, injuries, or emergency conditions in the body through surgical (operative) methods and medicines. To become a surgeon, a person must complete the education and profession of a general practitioner, then complete the education of specialist surgeons. In practice, surgeons often receive referrals from general practitioners or other specialists regarding the condition of patients who need surgery. Then, the surgeon will make a diagnosis according to the expertise and knowledge possessed to determine whether or not the surgical procedure is performed. In treating patients, the general surgeon is in charge of treating the patient before, during and after the surgical procedure. When the surgical procedure is performed, the surgeon works closely with anesthetists and nurses in the operating room to treat the patient. Subspecialty Branch of General Surgeon In addition to the general branch of surgery, a general surgeon can explore deeper