Researchers say patients getting the MRI had a three-week delay in the start of their treatment and higher false-positive incidences from MRIs might be causing some patients to get unnecessary mastectomies.
Study: MRIs delay breast cancer treatment
Doctors at Philadelphia's Chase Research Center studied 577 breast cancer cases.
They found 28 percent of patients who had an MRI ended up having a mastectomy versus 19.5 percent among non-MRI cases.
