A mammogram is an X-ray examination of the breasts to look for any abnormalities in the breast tissue.
A mammogram is able to determine whether an abnormality in the breast tissue is benign, where no further testing is needed, or potentially malignant requiring further investigation.
Breast tomosynthesis (3D mammography) is an advanced form of mammography, providing 3D imaging of the breast, allowing for greater detection of any abnormalities.