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Appendicitis is one of the most common causes of emergency abdominal surgery in the United States. Appendicitis usually occurs when the appendix becomes blocked by feces, a foreign object, or rarely, a tumor.
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Appendicitis is usually caused by a blockage of the inside of the appendix, which is called the lumen. Most often, the lumen is blocked by fecal material.
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A careful examination is the best way to diagnose appendicitis. It is often difficult even for experienced physicians to distinguish the symptoms of appendicitis from those of other abdominal disorders.
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