4. Retraction of the nipple
Nipple retraction, also known as nipple inversion or an inverted nipple, refers to a nipple turns inward toward the breast. Normally, a breast, the nipple will point outward; however, when a nipple points inward, it could be a sign of breast cancer. An inverted nipple is not always related to cancer. It could be caused by scarring or inflammation of the tissue that is located behind the nipple, which can be caused by several conditions.
However, in breast cancer, a nipple can retract as a result of a tumor attacking the duct that is located behind the nipple, which draws the nipple inward. If you notice that your nipple is pulling inward, you should schedule a breast exam as soon as possible. A thorough physical examination, including diagnostic imaging, will reveal if the cause of the inversion is the result of breast cancer.