A study presented Wednesday at the RSNA meeting adds further evidence to the recommendation women with newly diagnosed invasive lobular carcinoma should have their contralateral breast screened with MRI. Most women aren't routinely screened in the contralateral breast because whether to do so is highly dependent on the surgeon's preference. This research, however, provides more evidence why they should: MRI detected synchronous breast cancers in 16% of patients.
Invasive lobular carcinoma (ILC) composes approximately 10% of all invasive breast cancers. It has already been reported that MRI is a useful tool in detecting and evaluating ILC, but recent literature reports a 4% to 8% rate, whereas the current study reports a much higher 16%.