Dr. Sanjit Kumar Agrawal is a consultant breast oncosurgeon working in the Department of breast services of Tata Medical Centre Kolkata.In this episode we are discussing on Breast Cancer. Cancer occurs when changes called mutations take place in genes that regulate cell growth. The mutations let the cells divide and multiply in an uncontrolled chaotic way. The cells keep multiplying producing copies that get progressively more abnormal. In most cases the cell copies eventually form a tumor. Breast cancer is cancer that develops in breast cells. Typically the cancer forms in either the lobules or the ducts of the breast. Lobules are the glands that produce milk and ducts are the pathways that bring the milk from the glands to the nipple. Cancer can also occur in the fatty tissue or the fibrous connective tissue within your breast.