Question: Information: - The abdominal cavity is a large body cavity in humans and many other animals that contains many organs. It is a part of the abdominopelvic cavity. It is located below the thoracic cavity, and above the pelvic cavity. Its dome-shaped roof is the thoracic diaphragm, a thin sheet of muscle under the lungs, and its floor is the pelvic inlet , opening into the pelvis. - Danville is a home rule-class city in Boyle County, Kentucky, in the United States. It is the seat of its county. The population was 16,218 at the 2010 census. Danville is the principal city of the Danville Micropolitan Statistical Area, which includes all of Boyle and Lincoln counties. - Ephraim McDowell (November 11, 1771 June 25, 1830) was an American physician and pioneer surgeon. The first person to successfully remove an ovarian tumor, he has been called "the father of ovariotomy" as well as founding father of abdominal surgery. - A laparotomy is a surgical procedure involving a large incision through the abdominal wall to gain access into the abdominal cavity. It is also known as a celiotomy. The first successful laparotomy was performed without anesthesia by Ephraim McDowell in 1809 in Danville, Kentucky. - Adrenalectomy is the surgical removal of one or both ( bilateral adrenalectomy ) adrenal glands . It is usually advised for patients with tumors of the adrenal glands . The procedure can be performed using an open incision ( laparotomy ) or laparoscopic technique . Given the paragraphs above, decide what entity has the relation 'subclass of' with 'surgery'.
Answer:
adrenalectomy