Cancer (2.2.7)

• Cancer is the result of changes in cells that lead to uncontrollable growth and division, forming a tumour. This tumour may not be cancerous.
• 1. Benign- growths of cells contained in one place, usually within a membrane ● Not cancerous ● It grows until there is no more room ● It does not invade other tissues ● If it causes pressure or damage to an organ, it can be dangerous
• Malignant- the tumour grows and spreads to other tissues ● Cancerous ● The tumour may split up, resulting in cells being carried in the bloodstream or lymphatic system ● They can travel to and stay in another organ, potentially causing secondary tumours ● The cancer cells divide more rapidly and have a longer life span in comparison to normal cells