The rate of misdiagnosis of appendicitis is surprisingly high.
Approximately 100,000 patients undergo needless surgery each year.
As many as 2 out of 10 patients who have appendicitis surgery, and nearly 1 out of 5 elderly patients, turn out to have a normal appendix.
(Source: 2003 PIDB; 2003 MedPAR; Long et al. 2001; U.S. Department of Labor – Bureau of Labor Statistics)