Early detection?

I was faithful to my yearly mammogram. But then came the year that it was misread by my specialist! A year and a half later I went for my next mammo and they found an 8cm tumor!!! Simple mistake?? Apparantly not, as two ladies that endured chemo with me had also had misread xrays by the same specialist!!! How do we prevent this from happening??????

Anonymous
Kenosha, WI