Four states now require that women who have dense breasts be told that mammograms are not good enough to detect early cancers. Another study at least showed that women with dense breasts are not more or less likely to develop cancer. Radiologists do not know what to do, but the answer is simple. Screen with thermograms, which are just as accurate whether the breasts are dense or not.
See Associated Press article in The Toledo Blade, August 21, 2012.