Cancer can be described as an uncontrolled and undifferentiated growth of cells. It is the result of unregulated growth in a cell. When the cells keep on dividing without any control, they result in a tumour. Cancer, also called tumours can grow and interfere with the digestive, nervous, and circulatory systems, and they can release hormones that alter body function.

There are more than hundred varieties of Cancer that can be found.