Women With False Positive Mammograms at Higher Risk | Stronger Than Cancer
I love Susan Love's take on this:
"Surgery or needle biopsies may cause a local inflammatory or wound-healing reaction, which increases cancer risk," or "the extra radiation from the workup for the false positive could increase breast cancer," said Love. "Or we might be picking up on some subtle change in the microenvironment, the fibrous tissue, that's more conducive to cancer growing. We just don't know."
While others think there is some biological predisposition, she points out the very obvious possibility that the procedures that surround the investigation can lead to cancer later.