- Guide to Breast Cancer
- Take the Breast Cancer Quiz
- Young Women & Breast Cancer
- Patient Comments: Breast Cancer Prevention - Mammograms
- Patient Comments: Breast Cancer Prevention - Genetic Tests
- Patient Comments: Breast Cancer Prevention - Foods
- Introduction to breast cancer prevention
- What are the biological causes of breast cancer?
- What are the risk factors for developing breast cancer?
- What is the importance of early breast cancer detection?
- What are the advantages and limitations of mammography?
- How frequently should women undergo mammography and breast examinations?
- What is the risk of radiation with repeated mammography screening over the years?
- How helpful are BRCA1 and BRCA2 genetic tests in identifying women at risk?
- What is the link between estrogen and breast cancer?
- What are breast cancer prevention treatments?
- Are there other breast cancer prevention measures?
- Breast Cancer Prevention Tips
What is the importance of early breast cancer detection?
The various types of cancers behave differently, with distinct rates of growth and patterns of spreading (metastasis) to other areas of the body. Some cancers are "favorable" and treatable, while others are highly aggressive.
Compared to other cancers, breast cancer is on the more treatable end of the spectrum if diagnosed early. It is considered a "favorable" cancer because it can be detected early by breast examination or by mammography. Pancreatic cancer, for example, is on the lethal end of the spectrum of cancers. Pancreatic cancer is often difficult to detect until it is very far advanced.
Studies have clearly shown that the smaller the size of the breast cancer when detected, the better the chance of a surgical cure and long-term survival. The likelihood of a cure is also higher if the cancer is removed before it has spread to lymph nodes and other organs such as the lungs, liver, bones, and brain.
Currently, mammography and breast examinations serve as the foundation for screening for breast cancer. It is extremely important for a woman to have regular breast examinations as well as mammograms to detect early breast cancer.
What are the advantages and limitations of mammography?
Mammography is an X-ray examination of the breast that has the ability to detect a cancer in the breast when it is quite small, long before it may be felt by breast examination. Approximately 85% to 90% of all breast cancers are detectable by mammography. Early detection by mammography has reduced the mortality rate from breast cancer by 20% to 30% in women over 50 years of age.
However, some 10% to 15% of breast cancers are not visible on mammography but can be felt on physical examination of the breast. Therefore, a normal mammogram does not exclude the possibility of breast cancer. Breast examination by a health-care professional by palpation and visual inspection is also important. During a routine physical checkup, a doctor can conduct an examination of the breast.