Early detection is a key to defeating breast cancer, which is the most common type of cancer in American women. o It’s recommended that you perform an examination on your own or with a partner each month.o Examine your breasts one week after the end of your period, because your breasts usually aren’t tender or swollen.o Perform a self examination in a well-lit room using a mirror to check for changes in size, shape or position. Also look for any skin puckering, dimpling, sores or discoloration. o In the shower, look for any lumps or thickening in your underarm area, as well as above and below your collarbone. o If you find a lump or notice any noticeable changes, see your provider as soon as possible. For more health-related information in your inbox, sign up for our free e-newsletter.