Appendicitis is inflammation of the appendix. The appendix is a small pouch attached to the beginning of your large intestine.
Appendicitis is one of the most common causes of emergency abdominal surgery in the United States. It usually occurs when the appendix becomes blocked by feces, a foreign object, or rarely, a tumor.
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US Food and Drug Administration. FDA Issues Public Health Advisory on use of NeutroSpec, [Technetium (99m TC) Fanolesomab], Imaging Agent for Diagnosis of Appendicitis. Rockville, MD: National Press Office; December 19, 2005. Press Release P05-104.