Breast cancer may not always cause symptoms. In some women, it is found during a screening test. If you have these, do not think it is because of cancer. Other, less serious conditions, such as a breast cyst, can cause symptoms. But, it's still important to talk about them with your doctor. Finding and treating the cause early will improve your chances for a cure.
The most common symptom is a painless lump or thickening in or near the breast, or underarm area. In some women, these changes can cause pain. The lump may shrink or go away, but it does not mean the problem is gone. Any changes in the breast should be reported to your doctor.
Other changes to be aware of:
Common symptoms include:
Breast cancer. Merck Manual Professional Version website. Available at: https://www.merckmanuals.com/professional/gynecology-and-obstetrics/breast-disorders/breast-cancer. Updated January 2018. Accessed March 11, 2019.
Breast cancer in women. EBSCO DynaMed Plus website. Available at: http://www.dynamed.com/topics/dmp~AN~T113654/Bre...-cancer-in-women. Updated November 26, 2018. Accessed March 11, 2019.
Breast cancer signs and symptoms. American Cancer Society website. Available at: https://www.cancer.org/cancer/breast-cancer/about/breast-cancer-signs-and-symptoms.html. Updated September 22, 2017. Accessed March 11, 2019.
General information about breast cancer. National Cancer Institute website. Available at: https://www.cancer.gov/types/breast/patient/breast-treatment-pdq#_125. Updated February 6, 2019. Accessed March 11, 2019.
Last reviewed December 2018 by EBSCO Medical Review Board Mohei Abouzied, MD, FACP
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.