A short conversation about breast exams

"How often should women have mastectomies?"

"Well, in all but the most extremely rare cases, the most any person can have in their life is two."

"Oh. What? Wait. Are you sure? I would think it would be every six months or at least once a year..."

"Wait, do you mean mammograms?"

"I don't think it really matters whether or not they have children or how old they are. All women should have them."