David Leonhardt in the New York Times:
With all the tools available to modern medicine — the blood tests and M.R.I.’s and endoscopes — you might think that misdiagnosis has become a rare thing. But you would be wrong. Studies of autopsies have shown that doctors seriously misdiagnose fatal illnesses about 20 percent of the time. So millions of patients are being treated for the wrong disease.
As shocking as that is, the more astonishing fact may be that the rate has not really changed since the 1930’s. “No improvement!” was how an article in the normally exclamation-free Journal of the American Medical Association summarized the situation.
This is the richest country in the world — one where one-seventh of the economy is devoted to health care — and yet misdiagnosis is killing thousands of Americans every year.
How can this be happening? And how is it not a source of national outrage?
A BIG part of the answer is that all of the other medical progress we have made has distracted us from the misdiagnosis crisis.