What is Metastasis?
{{unsourced|date=April 2012}} '''Metastasis''' is what happens when [[cancer]] spreads from its original place to another part of the body. Cancer cells spread from the original site to other places in the body by traveling through the [[bloodstream]]. When the cancer cells stick to a new place in the body, they grow and form another tumor there. Metastasis makes cures more difficult, or in many cases impossible. {{Tumours}} {{biology-stub}} [[Category:Cancer]]