MRI Tied to More Aggressive Breast Cancer Treatment

“The use of preoperative magnetic resonance imaging (pMRI) in women with newly diagnosed breast cancer has increased by eightfold during the past 10 years in Canada’s most populous province and is associated with significant increases in adverse downstream consequences, including more mastectomies, a population-based study indicates.

“The research was published online September 24 in JAMA Oncology.

“Angel Arnaout, MD, University of Ottawa, in Ontario, and colleagues found that 14.8% of a cohort of 53,015 women treated with newly diagnosed breast cancer between 2003 and 2012 had undergone pMRI in the province of Ontario.

“A total of 65% of the cohort underwent breast-conserving surgery.”