Mammogram
Mammogram, X-ray image of the breast that helps physicians detect and evaluate breast abnormalities. Mammography is typically performed on women who do not have symptoms of breast cancer . The procedure can detect cancer in its early stages, when treatment is most effective. A mammogram can detect a breast abnormality as small as 0.5 cm (0.2 in), a size too small for a woman or her doctor to feel it as a lump.