The aim of breast self-examination is to look for warning signs that may indicate breast cancer, so diagnosis and treatment can be achieved early for the best chances of survival.
The NHS recommends being “breast aware”, as knowing what is normal for you will help you to be aware of any changes. Looking at and feeling your breasts regularly allows you to become familiar with your breast tissue. This should be done in the way that is most comfortable for you (for example, in the bath or shower, or when dressing). It is good to start breast self-examination in your twenties. Over time, you will become more familiar with the contours and feel of your breasts, and will be more alert to anything new. Remember, before the menopause a woman’s breasts may feel different at different times of the menstrual cycle, especially in the days just before a period starts.
The NHS “breast awareness” five-point code recommends that women:
- Know what is normal for you
- Look and feel
- Know what changes to look for
- Report any changes without delay
- Attend for breast screening when invited to do so.
What to look out for
It is important to know what to look and feel for, in particular:
- An area that is distinctly different from any other area on either breast.
- A lump, bumpy area or thickening in or near the breast or in the underarm area that persists through the menstrual cycle.
- A change in the size, shape or contour of the breast, especially those caused by arm movements, or by lifting the breasts.
- A mass or lump, which may feel as small as a pea.
- A marble-like area under the skin.
- A change in the feel or appearance of the skin on the breast or nipple - dimpled, puckered, scaly, red, or inflamed.
- Discomfort or pain in one breast that is different from normal, particularly if new and persistent.
- Bloody or clear fluid discharge from the nipples.
- Any change in nipple position - e.g. pulled in or pointing differently.
Interestingly, cancerous tumours are more likely to be found in certain parts of the breast. If you divide the breast into four sections, the approximate percentage of breast cancers found in each area are (in clockwise pattern):
- 41% upper, outer quadrant
- 14% upper, inner quadrant
- 5% lower, inner quadrant
- 6% lower, outer quadrant
- 34% in the area behind the nipple
Almost half occur in the upper outer quadrant of the breast, towards the armpit. Some doctors refer to this region as the "tail" of the breast and encourage women to examine it closely.
What should I do if I find a change?
Seek medical advice without delay if you discover any new breast changes, changes that persist after your menstrual period, or any other changes that you are concerned about. There are many, mostly harmless, reasons why a breast may look or feel different, but it is vital to get checked by your doctor as there is a small possibility that they could be the first signs of cancer.
Breast self-examination diagram