Learn how cancer forms inside the breast and the possible signs and symptoms of breast cancer.; tumor; breast cancer; breast health; Cancer; Jacqueline's brothers call her "The Baby," but she didn't back down from her fight with breast cancer. ; Healthy choices and active screening, like breast self exams and mammograms, are your best defenses in beating breast cancer.; mammogram; breast cancer; Breast Self Exam; biopsy; In this segment of HealthiNation, Dr. Holly shows us how cancer forms and spreads inside the breast, ways to detect the cancer early, and treatment options if you are diagnosed with breast cancer.