What is the difference between a screening mammogram and a diagnostic mammogram?
Screening mammography is performed in asymptomatic patients — patients who have no clinical signs or symptoms of breast cancer. Two views of each breast are obtained and are checked for technical adequacy by the technologist. These are interpreted later by the radiologist with results sent to the patient by mail. Diagnostic mammography is performed in symptomatic patients — patients who have signs or symptoms of breast cancer such as a palpable lump, nipple discharge, skin changes, etc. We also perform diagnostic mammography in patients with a past history of breast cancer, for follow-up of an abnormal screening mammogram, or for short-term follow-up of probably benign findings. These studies begin with the typical mammography views, with additional views and ultrasound obtained as deemed necessary by the radiologist. The studies are interpreted on line, with results given to the patient immediately.
