Also found in: Dictionary, Thesaurus, Encyclopedia.
an abnormal dilation of a duct by lipids and cellular debris. In a mammary duct the condition, which tends mainly to affect postmenopausal women, may be accompanied by inflammation and infiltration by plasma cells.
An inflammatory condition of the lactiferous ducts of the breast. There may be a discharge from the nipple, inversion of the nipple, and periareolar sepsis. The ectasia may occur at any age following menarche. Even though it resembles carcinoma of the breast, it is not malignant.
The cause is unknown, but in some cases it may be associated with hyperprolactinemia due to a pituitary tumor.
Duct ectasia is treated with surgical drainage of the abscess and antibiotics.
See also: ectasia