Not cancerous. Not malignant. Benign tumours are not able to spread to tissues
around them nor to other parts of the body.
Source: GreenFacts
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Usually a mild disease or condition that is not life threatening. They tend
not to reoccur once surgically removed. They can reach large sizes and can
become a problem if they exert pressure on organs. Benign tumours occurring in
the brain can be fatal.