The Importance of Breast Self-Exam

Breast self-examination (BSE) is a very important part of every adult woman's personal health regimen. Many physicians and cancer organizations recommend that BSE be performed once each month beginning at age 20 and should continue each month throughout a woman’s lifetime.

In addition to BSE, adult women should receive regular physician-performed clinical breast exams.

The American Cancer Society recommends women 40 years of age receive a screening mammogram every one to two years.

Beginning at age 50, mammography should be performed every year. 

Click Here to Learn How to Perform Breast Self-Exam

Regularly examining her own breasts allows a woman to become familiar with how her breasts normally look and feel and can help her more readily detect any changes that may occur. Many women naturally have some lumpiness and asymmetry (differences between the right and left breast). The key to the breast self-exam is to learn how to find changes in the breasts that persist over time.

While most women are aware of monthly breast self-examination, many still do not know how to perform it properly. Performing BSE incorrectly can be almost as bad as not doing the exam at all since it can give women a false sense of security. After reading these sections on BSE, women should discuss any questions they might have about BSE techniques with their physicians and ask him or her to demonstrate how to perform BSE during the clinical breast exam portion of the physical exam.

The Best Time to Perform Breast Self-Exam

Menstruating women: Hormonal changes due to the menstrual cycle may make the breasts more lumpy or swollen. Women who are menstruating should perform breast self-exam from a few days to about a week after menstruation (period) has ended, when breasts are usually less tender or swollen.

Women who are no longer menstruating: should do their BSE on the same day every month. Try to pick a day that is easy to remember, such as the first or fifteenth of every month, and make that the day each month for breast self-exam.

Women using oral contraceptives: are encouraged to do their BSE each month on the day they begin a new package of pills.

Breast Changes and Warning Signs to Watch for During Breast Self-Exam:

• Any new lump or hard knot found in the breast or armpit
• Any lump or thickening that does not shrink or lessen after your next period
• Any change in the size, shape or symmetry of your breast
• A thickening or swelling of the breast
• Any dimpling, puckering or indention in the breast
• Dimpling, skin irritation or other change in the breast skin or nipple
• Redness or scaliness of the nipple or breast skin
• Nipple discharge (fluid coming from your nipples other than breast milk), particularly if the discharge is bloody, clear and sticky, dark or occurs without squeezing your nipple
• Nipple tenderness or pain
• Nipple retraction: turning or drawing inward or pointing in a new direction
• Any breast change that may be cause for concern

If any of these changes are noted, women should see their physicians as soon as possible for clinical evaluation. However, in the majority of cases (80%), breast lumps and changes are not cancer. Women should not allow their fear of breast cancer keep them from telling their physician or healthcare provider about a lump or change they have found.

Women with Normally Lumpy Breasts Should Also Perform BSE

Even if a woman has normally lumpy breasts (typically called fibrocystic breasts), she can still learn the usual pattern of lumps and then point out new or unusual lumps to her physician. While lumpy breasts or breasts with benign (non-cancerous) masses or cysts can be more difficult to examine, monthly breast self-exams (BSE) are still critical. In fact, without knowledgeable direction from the patient, it may be more difficult for a physician to differentiate between a new mass and a stable lump. If a woman’s breasts are normally lumpy, she should note how many separate lumps she feels and their corresponding locations when performing self-exams. Then, during subsequent exams, she should check for any changes, particularly an increase in the size of lumps that persist after her period. Any changes should be reported to a physician or healthcare provider.

Breast Examination During and After Pregnancy Is Critical

Women should continue monthly breast self-examination (BSE) during pregnancy. Clinical breast examination by a healthcare professional should also be made on a monthly basis during pregnancy. It is especially important that clinical breast exam be performed during the first doctor visit of the pregnancy, before the breasts go through significant physiologic changes. Some changes or lumps are more difficult to evaluate once the breasts have enlarged and become more nodular. The main problem with breast cancer during pregnancy is a delay in diagnosis that results in women being diagnosed with breast cancer at a later, more advanced stage. Vigilant, monthly breast self-examination during pregnancy and afterwards during breast-feeding can help prevent delayed diagnosis of breast cancer and enables optimal treatment.

If something that seems unusual is felt in one breast, women should feel for it in the other breast. If the area is found in both breasts, it is probably normal breast anatomy better still, see your doctor.