Duct ectasia is also known as mammary duct ectasia. It is a common condition that tends to affect women in their 40s and 50s. It occurs when a breast duct widens and its walls thicken, which can cause it to become blocked and lead to fluid build-up.
Duct ectasia may cause a sticky green or black discharge, which is often thick. The nipple and nearby breast tissue may be tender and red. The nipple may be pulled inward. Sometimes scar tissue around the abnormal duct causes a hard lump that may be confused with cancer.
This condition sometimes improves without treatment, or with warm compresses and antibiotics. If the symptoms do not go away, the abnormal duct can be removed through an incision (cut) at the edge of the areola (the darker colored area around the nipple).
Duct ectasia does not increase breast cancer risk.
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