What are the potential disadvantages to breast MRI? How should it be used in a treatment plan to achieve the best results?
A. As with breast US, MRI may identify many more questionable benign findings than cancers, leading to unnecessary additional testing and possible biopsies. As no long term outcomes data currently exist that actually show a demonstrated mortality and morbidity reduction attributable to MRI annual screening for high risk patients, these women should consult with their physicians regarding which type of testing is best for them. Women with compromised renal function, or with certain types of metallic objects within their bodies may not be able to undergo MRI scans. Screening MRI is not appropriate as a substitute for a well performed mammogram. It should never be used as the initial examination in a patient with an obvious clinical or mammographic abnormality, and should not be used in place of biopsy for a clinically palpable or suspicious abnormality that is visible on mammography or ultrasound. MRI guided biopsy should be reserved for those suspicious abnormalities that can be identif
