What is a mammogram screening?
A screening mammogram is a low-dose X-ray of the breast, taken to look for early changes in women who have no symptoms at all. Each breast is briefly compressed between two plates and imaged from two angles, so overlapping tissue separates and small changes become visible.
What it is looking for is not only lumps. Mammography is the only widely used test that reliably shows microcalcifications — tiny mineral deposits that can be the earliest visible sign of a cancer, years before anything can be felt. A breast ultrasound generally cannot see them, which is why it supplements a mammogram rather than replacing one.
The word “screening” is doing real work in that sentence. A screening mammogram checks women with no symptoms; a diagnostic mammogram investigates something already noticed. If you have found a lump, that is the diagnostic route, and whether a breast lump is cancer is the better place to start. At Melanie Seah Breast Specialist in Singapore, Dr Melanie Seah, a Consultant Breast Surgeon, advises on both and reviews the images with you.


