When new cells are needed, the body's cells divide. Tumours form when cells in a specific part of the body expand and divide uncontrollably, generates a mass of tissue. Normal cells that have grown out of control are benign tumours. Malignant tumours are those cells that are developing out of control and behave abnormally. Breast cancer develops in the breast tissue. Similar to other cancers, it can enter and expand into surrounding tissues. Consult a Gynaecologist in Patna to know about the ris...