Breast cancer remains the main cause of cancer death in women in most societies around the world. Scintimammography is a recently verified technique that will expand the use of nuclear medicine to a new group of patients is whom scintigraphic imaging has not been widely used, it delivers a sensitivity as high as X-ray mammography in palpable tumors but with greater specificity. It is best used in patients in whom X-ray mammography, ultrasound and MRI prove non-diagnostic or unhelpful, particularly those women with dense breasts or who have had previous breast surgery.