Magnetic Resonance Imaging in Patients With Breast Cancer

The goal of this clinical research study is to learn how often magnetic resonance imaging (MRI) of the breast locates additional areas of cancer in the breast of patients with lobular cancer as well as in the breasts of young breast cancer patients (less than age 40 years). Researchers also hope to learn how often the results of the MRI changes the type of surgical treatment that is recommended and understand the costs associated with using MRI in the diagnostic process. Researchers also want to use a different way of looking at the MRI scans to learn if they can more easily learn the difference between a cyst and a tumor.