In Situ Carcinomas of the Breast DCIS (Ductal Carcinoma In Situ) DCIS is commonly identified in association with micro-calcifications seen on a mammogram. These lesions are often not palpable and may be identified commonly during routine screening breast imaging. Cells are similar to those of invasive carcinomas but are confined to ductal structures within the … Continue reading In Situ Carcinomas of the Breast