Cancer is the uncontrolled division of abnormal cells. Cancer may begin anywhere in the body particularly in the skin, internal tissues or organs. A tumour is a mass of abnormal cells. Tumours are of two types, benign tumours and malignant tumours. Benign tumours remain localised and do not spread to neighbouring tissues. They can be surgically removed and cause no harm to other organs of the body. Malignant tumours begin to spread into nearby tissues, lymph nodes or organs, disrupting their function. Click on the below tabs to know more.