Mammary duct ectasia is of common inflammatoryd isease of breast.It is also called plasma cell mastitis,comedom astitis,periductal mastitis,granulomatous mastitis and so on.

• 乳腺导管扩张症是临床较常见的乳腺炎性疾病,还被称为浆细胞性乳腺炎、粉刺性乳腺炎、导管周围乳腺炎、肉芽肿性乳腺炎等。