Breast cancer tumor size in MRI versus surgical pathological specimen: A correlative study

11550 Background: Although magnetic resonance imaging (MRI) is superior to conventional imaging techniques in breast cancer, its correlation with actual tumor size has not been shown to be impressive. The purpose of our study is to determine the correlation of MRI with pathological findings of breast cancer in patients treated in West Virginia University Hospitals. Methods: This is a retrospective study analyzing a database of 43 patients with breast cancer who had preoperative MRI. We estimated the correlation between the preoperative largest tumor diameter on MRI and diameter on pathological evaluation after surgery. The size of the surgical specimen is considered the gold standard for tumor measurement. A subset of 15 patients received neoadjuvant chemotherapy, while 28 patients did not. In all patients, MRI diameters were measured preoperatively. All MRI diameters were estimated by only two radiologists in our institution. Results: The mean age of our patient population was 47.4 years (range: 36–70). ...