We have cared for thousands of breast cancer patients at Kaiser Permanente medical offices. With our multidisciplinary medical expertise, we combine current technology, analysis of the latest cancer research, teamwork, and compassion — all to meet our high standards for our patients' care.
Breast cancer occurs when abnormal cells grow out-of-control in one or both breasts. They can invade nearby tissues and form a mass, called a malignant tumor. The cancer cells can spread (metastasize) to the lymph nodes and other parts of the body.
Breast cancer is many women's worst fear. But experts have made great progress in treating cancer. If it is found early, breast cancer can often be successfully treated, and it is not always necessary to remove the breast.