the excision of a ganglion. Gastrectomy is the partial or full removal of the stomach. Gingivectomy is the removal of gums. Glossectomy is the removal of part or all of the tongue. Gonadectomy is the removal of the gonads. H Hemicolectomy is the removal of half the colon or the large intestine. Hemicorporectomy is the surgical amputation of the entire body below the waist, including the legs, genitalia, urinary system, pelvic bones, anus, and rectum. Hemilaminectomy is the surgical trimming or partial removal of the lamina portion of a spinal vertebra. Hemipelvectomy is the surgical removal of half of the pelvis and one of the legs. There are two types of the operation, first being an internal hemipelvectomy in which the pelvis on the one side is removed but the leg is saved. The second type of operation being an external hemipelvectomy, which removes the pelvis on the one side along with the amputation of that leg. Hemispherectomy is the surgical removal of one cerebral hemisphere. Hemorrhoidectomy is removal of a hemorrhoid. Hepatectomy is the surgical resection of the liver. Hypophysectomy is the surgical removal of the pituitary gland or hypophysis such as when presented with a tumor. Hysterectomy is the surgical removal of the uterus. I Iridectomy is the removal of a piece of iris from the eye (mainly done for iris tumours, such as melanoma of the iris). J Jejunectomy is the surgical removal of all or part of the jejunum. K Keratectomy is the surgical removal of the cornea of the eye. Kyphectomy is a specific surgery on the spine. L Laminectomy is the trimming or surgical removal of the lamina, portion of the spinal vertebrae. Laryngectomy is the surgical removal of the larynx, which involves separating the airway from the mouth, nose and esophagus. Lobectomy is the removal of a lobe. Lumpectomy is the surgical removal of a lump from a breast. Lymphadenectomy consists of the surgical removal of one or more groups of lymph nodes. M Mandibulectomy is the removal of the mandible or the lower jaw bone. Mastectomy is the surgical removal of one or both breasts. A mastectomy can be either partial or complete. Mastoidectomy is the removal of mastoid process. Maxillectomy is the removal of the maxilla or cheekbone. This can sometimes be done with orbital exenteration (removal of the eye and the orbital contents surrounding the eye) or by enucleation (removal