Magnetic Resonance Thermal Image Guided Laser Interstitial Thermal Therapy in Treating Patients With Breast Cancer

Inclusion Criteria: * Postmenopausal state * Histological diagnosis of breast invasive ductal carcinoma with receptor profiles obtained * MRI visible breast lesion * Unifocal cancer, less than 1.5 cm in maximum diameter (clinical stage T1), with no evidence of extensive in situ cancer surrounding the main tumor; the eligibility will be determined by the MR imaging appearance of the tumor; if the tumor (proven invasive ductal carcinoma) is a unifocal mass without additional enhancement, it will be judged eligible; however, if the tumor is associated with additional enhancement and/or a satellite focus, it will not judged ineligible, as these are signs of additional in situ or invasive cancer * Clinical stage N0 (no metastatic axillary lymph node on physical examination or imaging work-up) * Ability to give informed consent Exclusion Criteria: * Previous surgery or radiation for the ipsilateral breast cancer * Presence of any condition (e.g., metal implant, shrapnel) not compatible with MRI * Tumor located less than 1 cm from the skin or the pectoralis muscle