ductal carcinoma in situ [also called DCIS or intraductal carcinoma]
(DUK-tal kar-sih-NO-ma in SYE-too)
Abnormal breast cells that involve only the lining of a milk duct. These cells have not spread outside the duct into the normal surrounding breast tissue.
Read more about ductal carcinoma in situ or see an illustration of ductal carcinoma in situ.
Audio contributed by: Dr. Andrew von Eschenbach