I had breast cancer at 82 and 86. This is beyond the age of recommended screenings, but I am very grateful for my doctor’s referrals (the first at my request). Both were small and treatable, and I will continue with mammos until I am no more. Reaching a particular age does not mean immunity in the future. You might want to research findings on percentage of breast cancers in older patients. After all we have lived more years exposed to environmental pathogens.