MedlinePlus Medical Encyclopedia: Benign

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Benign

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Illustrations	Definition

Illustrations

Benign tumor of the skin

Definition Return to top

The term "benign" refers to a condition, tumor, or growth that is NOT cancerous. This means that it does not spread to other parts of the body or destroy nearby tissue. Benign tumors usually grow slowly.

In general, a benign tumor or condition is not harmful. However, this is not always the case. If a benign tumor is big enough, its size and weight can press on nearby blood vessels, nerves, or organs, or otherwise cause problems.

The opposite of benign is malignant.

Update Date: 4/27/2007

Updated by: Rita Nanda, M.D., Department of Medicine, Section of Hematology/Oncology, University of Chicago Medical Center, Chicago, IL. Review provided by VeriMed Healthcare Network.

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