You may see these descriptions of the type of cancer cells in your report: DCIS (Ductal Carcinoma In Situ). This is a cancer that is non-invasive. It stays inside the milk ducts. NoTe: There are subtypes of DCIS. You’ll find their names in the word list on page 30 of this booklet. LCIS (Lobular Carcinoma In Situ). This is a tumor that is an overgrowth of cells that stay inside the milk-making part of the breast (called lobules). LCIS is not a true cancer. It’s a warning sign of an increased risk for developing an invasive cancer in the.
