Describe cancer as a biological condition resulting from specific changes in cells that lead directly to uncontrolled growth and division.
Define benign tumours as localised growths of abnormal cells, usually contained within a membrane, that do not invade other parts of the body.
Define malignant tumours as cancerous cells that actively invade neighbouring tissues and spread via the bloodstream to form secondary tumours in different parts of the body.
Recognise that scientists have identified various lifestyle risk factors as well as distinct genetic risk factors associated with the development of different types of cancer.
