My mom at age 42 felt a lump. Dr. recommended a mammogram. Lump did NOT show up on mammogram. Mammograms are not 100%. My mom and dad spoke up and wanted further tests. Guess what? It was cancer. Long story short, she died 10 years later from metastatic breast cancer. Spread to her bones. Very painful and horrible way to die. Now my grandpa is battling metastatic prostate cancer.