Fun fact: If they cut you open to remove your appendix and find out that it isn't inflamed or infected then they still remove it since the scar left after surgery is universally known that you already had an appendectomy and so doctors, on seeing the scar, will rule out anything to do with the appendix as a possible cause for your harrowing abdominal pain.

So to eliminate this possible confusion surgeons - all around the world - always follow this unwritten rule.