Hope all went well with your recent call back. The same thing happened to me this week and, fortunately, all turned out ok this time. It is very scary, though, and your body does go into panic mode. Regards...
I don't think this means a "retake" but rather some additional views from other angles. There may have been an area that wasn't quite clear on the normal screening views that they want to zero in on and look at more closely. Often this can be simply some breast tissue that has folded over on itself and caused a shadow. Many women experience the "call back" nearly every year. Regards ....