Ductal Carcinoma in Situ (DCIS)

Ductal carcinoma in situ (DCIS) is the growth of abnormal cells in the milk ducts of the breast. It is a very early form of noninvasive breast cancer.

DCIS is seen as small calcium deposits (microcalcifications) on a mammogram.

Current as of: May 12, 2017

Author: Healthwise Staff

Medical Review: Adam Husney, MD - Family Medicine & Sarah A. Marshall, MD - Family Medicine & E. Gregory Thompson, MD - Internal Medicine & Kathleen Romito, MD - Family Medicine & Douglas A. Stewart, MD, FRCPC - Medical Oncology