Facts About Invasive Breast Cancer
EVISTA is indicated for the reduction in risk of invasive breast cancer in postmenopausal women with osteoporosis.
Although invasive breast cancer affects a relatively small percentage of women, it is the most common cancer among women, except for nonmelanoma skin cancers. As women past menopause age, they have a higher chance of being diagnosed with invasive breast cancer than younger women.
Knowledge about invasive breast cancer and appropriate screening methods is one of your most powerful tools against the disease. By learning as much as you can about the disease, you will also be better equipped to discuss your risk for invasive breast cancer with your healthcare professional.
Invasive vs Noninvasive Breast Cancer
Cancer occurs when cells in a part of the body begin to grow out of control and form a mass or lump called a tumor. Breast cancer is a tumor that starts from cells in the breast, and is characterized as "invasive" or "noninvasive" breast cancer. Knowing the difference between these two types of cancer is important for your overall understanding of the disease and when assessing your risk.
Invasive Breast Cancer
Invasive breast cancer occurs when malignant cells break through the milk duct or lobule and invade surrounding fatty tissue, eventually spreading to the lymphatic system and bloodstream. Invasive breast cancer is the most common type of breast cancer.
Noninvasive Breast Cancer
In contrast, noninvasive breast cancer is cancer that is contained in the breast's milk ducts or lobules, and does not invade any of the surrounding normal tissues. About 1 out of 5 new breast cancer cases will be noninvasive. Nearly all women diagnosed at this early stage of breast cancer can be cured.
Note: EVISTA does not reduce the risk of noninvasive breast cancer in postmenopausal women with osteoporosis.
The Truth About Breast Cancer
Many myths and misunderstandings surround breast cancer, potentially interfering with your clear understanding of the disease. Knowing the truth about breast cancer — including the various risk factors, effective screening methods, and other concerns — is vital.
- "Family history is only one of several important risk factors."
- True. Only 20% of U.S. women diagnosed with invasive breast cancer have family history of the disease. About 80% of women who get breast cancer have no family history of the disease. These data are based on approximately 148,000 postmenopausal women participating in the Women's Health Initiative study wherein 2.2 percent (3,236) developed invasive breast cancer over 5 years.
- "Incidence rate (likelihood) for breast cancer risk increases with age."
- True. Even though it may seem like a younger woman's disease, about 80% of women diagnosed with breast cancer are age 50 or older.
- "A mammogram is an important screening tool."
- True. A mammogram won't prevent breast cancer, but it is an effective way to detect breast cancer early.
- Yearly mammograms are recommended for all women age 40 and above.
- True. A mammogram won't prevent breast cancer, but it is an effective way to detect breast cancer early.
- "Other screening tools are available to detect breast cancer."
- True. A breast self-exam should be done once a month and women over 40 should have a clinical breast exam performed by their healthcare professional every year.
- "A majority of breast lumps are not cancerous."
- True. 80% of all biopsied breast lumps are not cancerous.
























