Women older than 20 years should perform monthly breast self-examinations (BSE). If you still have menstrual periods, you should perform the examination a few days after your period has ended. During this time, your breasts are not tender. If you are not menstruating (such as in menopause), BSE should be performed on the same day each month.
Use the following techniques to perform a BSE. Choose the method that is best for you.
Stand before a mirror and compare both breasts for differences in size, nipple inversion (turning in), bulging, or dimpling. Note any skin or nipple changes, such as a hard knot or nipple discharge.
Inspect your breasts in the following 4 steps:
In these positions, your pectoral muscles are contracted, and a subtle dimpling of the skin may appear if a growing tumor has affected a ligament.
Right breast
Left breast
A BSE can easily be performed while you're in the bath or shower. Some women discover breast masses when their skin is moist.
Your health care provider can show you the proper technique for a breast self-examination during your annual breast examination. This should be brought up during your general check up.
You should perform this exam monthly and immediately report any suspicious breast lumps or conditions to your doctor.
Routine breast self-examination has not been proven to reduce breast cancer deaths, nor has it been as helpful as routine screening by mammography. However, breast self-exams are very cost effective and have no side effects. Tumors that may be breast cancer, when found with this technique, can be in an early stage, may have a better outcome, and may possibly have higher cure rates (long-term survival).