If you have risk factors for breast cancer like a BRCA gene mutation, monthly self-checks could help you detect new lumps early and give you peace of mind. To perform a BSE, you should:
Choose a day each month. Your breasts are less likely to feel sore or swollen about a week after your period has ended, making it a good time for a BSE. If you’re not menstruating, simply schedule a reminder for the same day each month.
Check your breasts while standing. You can use the flats of your fingers to lightly press around both breasts and armpits with light, medium, and firm pressure. You’re feeling for any thickening, hard knots, pea or marble-sized lumps, and other changes.
Repeat while lying down. You may catch changes you missed before when your breast tissue is spread evenly along the chest wall.
Perform a visual inspection. Check your breasts in the mirror with your arms at your sides and again with your arms overhead. You’re looking for any changes in the nipple or breast shape, skin dimpling, redness, or swelling.
If you notice any changes during your BSE, report back to your doctor. They can perform a physical exam, mammogram, or biopsy as needed.