DCIS is classified as Stage 0 .
Ductal carcinoma in situ ( DCIS ) , also known as intraductal carcinoma , is a pre-cancerous or non-invasive cancerous lesion of the breast .
DCIS is classified as Stage 0 .
Ductal carcinoma in situ ( DCIS ) , also known as intraductal carcinoma , is a pre-cancerous or non-invasive cancerous lesion of the breast .