Appendicitis is an inflammation of the appendix, a finger-like glandular piece of tissue that connects to the beginning of the large intestine, usually at the lower right side of the abdomen. In older children, the classic symptoms of appendicitis are abdominal pain, fever, and vomiting. Abdominal pain usually begins in the center of the abdomen, around the area of the navel ("belly button"). Later, the pain may move downward and to the right - to an area called McBurney's point, roughly corresponding to the location of the appendix in the lower right portion of the abdomen.
For appendectomy and some notes in mangement: