A recent study found that nearly 90 percent of medical patients who come to the Mayo Clinic for a 'second opinion' get a completely new diagnosis.
For the past 10 years, Allen Zderad was blind. But now the 68-year-old man can see again with the help of a breakthrough "bionic eye" device.
Doctors at the Mayor Clinic have apparently cured a woman’s late-stage blood cancer – the miracle drug? A large dose of the measles vaccine.