General surgery is a special surgery focused on stomach contents including esophagus, stomach, small intestine, colon, liver, pancreas, gall bladder and biliary tract, and often thyroid gland (depending on the local reference pattern). They also deal with diseases involving skin, breast, soft tissue, trauma, peripheral vascular surgery and hernias. General surgery can be sub-specialist in various disciplines, Trauma Surgery / Critical Care, Surgery, Laparoscopic Surgery, Colorectal Surgery, Breast Surgery, Vascular Surgery, Endocrine Surgery, Transplant Surgery, Surgical Oncology, Cardiothoracic Surgery and Pediatric Surgery.