Surgery

Surgery is the division of medicine which usually treats diseases by working intercession. Surgical events may involve relieving mechanical obstruction of a tubular organ, such as the intestine; or removing a unhealthy organ, which cannot be rescued by medical treatment, such as a infected appendix or inflamed gallbladder; or removing a malignant tumor with a margin of normal tissue; or fixing an unwell organ, or removing it if the organ is permanent and its absence is well-matched with survival.