What to expect from a mammogram for breast cancer

Mammography can show changes in breast tissue, including a lump, an area of distortion, or tiny calcium deposits. These findings do not by themselves confirm breast cancer. A radiologist reviews the images and may compare them with earlier mammograms.

If an area needs a closer look, the next step may be additional mammogram views, an ultrasound, or a biopsy. A biopsy examines cells or tissue and is different from an imaging test.

On the day, avoid deodorant, powder, lotion, or talc on the breasts and underarms because these products can appear as marks on an image. Wear a two-piece outfit so you can undress from the waist up. Tell the radiographer about breast implants, pregnancy, breastfeeding, or any tender area.

During positioning, describe discomfort clearly. Compression lasts briefly and helps reduce movement and improve the image. Afterward, you can usually return to normal activities while waiting for the result.

Contact your breast-care team promptly if you develop a new lump, bloody nipple discharge, skin dimpling, nipple inversion, or a breast change that persists. Seek urgent help for severe breathing difficulty, fainting, or rapidly worsening illness; these are not routine mammogram effects.

Ask which breast changes prompted the mammogram, when and how the report will arrive, whether comparison images are available, and what follow-up test would clarify an uncertain finding.