Mammary Duct Ectasia

Mammary duct ectasia (or duct ectasia) is a noncancerous breast condition causing inflammation (swelling) and thickening of your milk ducts. Your breasts are made up of lobules (glands that make milk), ducts (tubes that carry milk to your nipple) and other tissues. As you age, your milk ducts shorten and widen. This causes your breasts to become sore or for fluid to build up and clog your duct. Most people recover without treatment, but if symptoms don’t go away, your healthcare provider may prescribe antibiotics or remove the affected duct with surgery.

Who is likely to have mammary duct ectasia?

Anyone assigned female at birth (AFAB) can have mammary duct ectasia. The condition is more common among women and people AFAB who are approaching menopause (around age 50 or older). It can also occur after menopause. Duct ectasia can happen in men and people assigned male at birth (AMAB), but this is rare.

Is mammary duct ectasia cancerous?

No, it’s noncancerous (benign) and doesn’t increase your risk for developing breast cancer. However, some symptoms of duct ectasia are associated with symptoms of breast cancer. It’s a good idea to discuss any changes in your breasts with your healthcare provider.