My Dad had one that he found while he and Mom were in France on a vacation. He didn’t have any idea WHAT it was, but as soon as they got back, off to the hospital they went. It was the same thing that killed George C. Scott. Luckily, they got to Dad’s in time! Not everybody is so fortunate.
lots of people have died this way
pre 1980s, detection and treatments were unheard of