Invasion: How cancer cells spread around the Body

Ninety per cent of cancer deaths occur when the neoplasm spreads beyond the primary tumor and invades other organs. This process, known as metastasis, normally signals a sharp deterioration in prognosis. The manner in which cancer cells migrate around the body remains an ill-understood process, but it is clearly a topic in which physical science is deeply involved. Normally cells quit the primary tumor and enter either the lymph system of the blood system (“intravasation”).