“Breast cancer can happen when cells in your breast grow out of control. There are different types of breast cancer. The type depends on which cells in your breast turn into cancer.

Breast cancer can start in many parts of the breast. This includes the ducts, the lobules, or the tissue in between.

Most breast cancers affect people who were assigned female at birth. But breast cancer can also happen to people assigned male at birth. This is rare, but it does happen. See our guide to Male Breast Cancer.

Screening exams can help find breast cancer early. This is also called early detection, and it can save your life!”

Memorial Sloan Kettering Cancer Center – MSKCC (Breast Cancer: Signs & Symptoms, Causes & Prevention, Anatomy & More | Memorial Sloan Kettering Cancer Center)