what causes green nipple discharge
Breast cancer. Ductal ectasia - may cause a green or brown nipple discharge. Breast duct cancer (see Breast cancer) Breast papilloma (see Breast lump) Paget's disease of nipple - can cause a bloody nipple discharge. Breast stimuation (see Breast symptoms) - various kinds of breast stimulation may produce a small discharge: Sexual stimulation.
An inflamed duct (mammary duct ectasia) Mammary duct ectasia is one of the most common conditions related to abnormal nipple discharge. It causes one or more of the ducts beneath your nipple to become inflamed and clogged with a thick, sticky substance that's green or black. Most often, it affects women in their 40s and 50s.