Cancer is a condition where cells in a specific part of the body grow and reproduce uncontrollably. The cancerous cells can invade and destroy surrounding healthy tissue, including organs.
Cancer sometimes begins in one part of the body before spreading to other areas. This process is known as metastasis.
More than one in three people will develop some form of cancer during their lifetime.
In the UK, the four most common types of cancer are:
There are more than 200 different types of cancer, and each is diagnosed and treated in a particular way.