If the doctor found a lump and dismissed it because of a mammogram without doing a biopsy, he is a quack who should have not only been sued into the poor house, he should have lost his license to practice medicine.
He was a family friend, a very good man and suing him would not have brought our mother back.
Coincidentally do you remember hearing about a pharmacist in Kansas City diluting chemo to increase his profits? That was where she was getting her chemo, for him we signed the paperwork. No money to speak of, but he didn’t make a mistake, he committed a crime.