Reference Terms
from Wikipedia, the free encyclopedia

Tumor

Tumor (American English) or tumour (British English) originally means "swelling", and is sometimes still used with that meaning.

Tumor meaning swelling is one of the five classical characteristics of inflammation.

However, the term is now primarily used to denote abnormal growth of tissue.

This growth can be either malignant or benign.

Note:   The above text is excerpted from the Wikipedia article "Tumor", which has been released under the GNU Free Documentation License.
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August 3, 2015

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updated 12:56 pm ET