extravasation

Definition / meaning of extravasation

The leakage of blood, lymph, or other fluid, such as an anticancer drug, from a blood vessel or tube into the tissue around it. It is also used to describe the movement of cells out of a blood vessel into tissue during inflammation or metastasis (the spread of cancer).

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Source(s):

The Web site of the National Cancer Institute (http://www.cancer.gov/)

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