I seem to remember a case where a doctor amputated the wrong leg.
There was a case where a small boy had cancr in one eye and needed it removed. The Dr. removed the healthy eye instead and discarded it. Later the boy had the correct, cancerous eye removed as well, becoming totally blind.
Surgeons have removed the wrong, non-cancerous breast before as well.
It happens. Shouldn’t. Google “Swiss cheese effect and medical errors” for insight as to how.
Many steps to prevent these but some sneak through.
They have removed wrong feet, wrong legs, wrong hands, wrong arms, wrong eyes, wrong toes, wrong fingers, wrong ears.