Updated March 11, 2015.
Definition: Metastasis
A metastasis is defined as the spread of cancer cells from their primary location to another region of the body.
Most cancers can spread to nearly any region of the body, but some sites of metastases are more common than others, for example, the lungs, the liver, and bones.
The ability to metastasize is what distinguishes malignant (cancerous) tumors from benign (non-cancerous) tumors.
Further Reading:
Pronunciation: met-ass-stu-sis
Also Known As: metastatic cancer
Examples: Larry was told that his lung cancer had metastasized to his brain.
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