Ductal Carcinoma in Situ Between 30-50% of the new breast cancers that are detected through mammography screenings are classified as Ductal Carcinoma in Situ, or DCIS.  DCIS refers to the abnormal growth of cells that are encapsulated within the milk ducts of the breast.  It is a calcified lesion that is approximately 1 – 1.5 … Continue reading DCIS