A<unk>  (Greek: lobos: Lobe of brain, tomos: "cut/slice") is a form of psychosurgery, also known as a leukotomy or leucotomy (from Greek leukos: clear or white and tomos meaning "cut/slice"). It consists of cutting the connections to and from, or simply destroying, the prefrontal cortex. These procedures often result in major personality changes and possible mental retardation. <unk> es were used in the past to treat a wide range of severe mental illnesses, including schizophrenia, clinical depression, and various anxiety disorders.
Lobotomy
Cricothyrotomy
Tracheostomy
Turbinectomy
Pneumonectomy
Coccygectomy
Chest tube insertion
Lung transplantation