Core biopsy has largely replaced open surgical biopsy for breast lesions requiring tissue diagnosis. Core biopsy is easily and comfortably performed at Chesapeake Medical Imaging using local anesthesia; it usually requires no more than 30-45 minutes. With this technique, small samples of tissue are removed with a needle device, using either ultrasound, mammography or MRI to guide the needle. This amount of tissue is sufficient to allow definitive pathologic diagnosis, yet the procedure causes minimal discomfort and no significant breast scarring. When the diagnosis is “benign”, the patient does not need surgical follow-up. If the diagnosis is cancer or precancer, then the surgeon can plan a single step surgical approach, based on the imaging and biopsy results.