What is cancer?
Cancer is not a single disease with a single cause or type of treatment. In fact, there are as many cancers as there are types of human cell – just over 200. Each of the 200 types of cancer has its own name, behaviour and treatment. All cancers involve abnormal growth of cells.
Cancer types
Select cancer type Bladder Cancer Bowel Cancer Breast Cancer Leukaemia Lung Cancer Melanoma Non-Hodgkin's Lymphoma (NHL) Oesophageal Cancer Ovarian Cancer Pancreatic Cancer Prostate Cancer Stomach Cancer
The organs and tissues of the body are made up of cells. As cells age, there is a constant process of cells dying and being replaced by new cells. This is usually an orderly process, but if too many new cells are created they form a tumour.
Some tumours are not cancerous (benign) and may not need treatment, but malignant tumours (cancers) can spread.
Sometimes cells break away from the original (primary) cancer and spread to other parts of the body through the bloodstream or lymphatic system. These cells may continue to duplicate in an uncontrolled way, forming a new tumour in a different part of the body.
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