Tuesday, August 31, 2010
The main reason cancer can be difficult to cure is that it can spread to a different part of the body from where it started. The cancer that grows where it first started in the body is called the 'primary cancer'. The place a cancer spreads to and then starts growing is called the 'secondary cancer' or 'metastasis'.
In order to spread, some cells from the primary cancer must break away, travel to another part of the body and start growing there. Cancer cells do not stick together as well as normal cells. They also may produce substances that stimulate them to move. But how do cancer cells travel through the body?
In order to spread, some cells from the primary cancer must break away, travel to another part of the body and start growing there. Cancer cells do not stick together as well as normal cells. They also may produce substances that stimulate them to move. But how do cancer cells travel through the body?
There are three main ways a cancer spreads
- Local spread
- Through the blood circulation
- Through the lymphatic system
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