MRI is better than MDCT for determining if and how far breast cancer has spread into the breast ducts and should be used before patients receive breast conserving treatment, a new study shows. "Patients have a lower survival rate if their surgical margins are positive for tumor cells. A positive surgical margin is commonly the result of inadequate resection of the cancer's intraductal component," said Akiko Shimauchi, MD, at Tohoku University in Sendai, Miyagi, Japan. "Accurate preoperative diagnosis of the intraductal component allows the surgeon to achieve a cancer-free surgical margin," she said........
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