Breast cancer is a disease in which cells in the breast grow abnormally and form a tumor. It is one of the most common cancers worldwide, especially among women, but men can also develop it. What Happens in Breast Cancer? Normally, cells grow and divide in a controlled way. In breast cancer, genetic changes (mutations) cause cells to grow uncontrollably. These cells can: Form a lump (tumor) in the breast Invade nearby tissues Spread to other parts of the body (metastasis), such as the bones, lungs, liver, or brain. To know more book an appointment on 08048060912 Breast Cancer Specialist in Chembur | Breast Cancer Specialist in Mumbai Breast Cancer doctor in Chembur Cancer Specialist in