Breast cancer affects about 1 in 8 women at some point in their lifetime; this equates to about 12.5%. Breast cancer has no allegiance and can not only affect women but also men at a rate of 1 in 100. Breast cancer is most commonly found on routine screening imaging, and many times breast cancer does not present as a palpable lump; although some cancers are palpable. Many breast cancers are not only treatable but curable if diagnosed early. Learning about breast anatomy and how the breasts function can help you understand which changes are normal and which are not.