Benign and Malignant Tumor
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Understanding Tumor
Benign and Malignant Tumor
Benign
(or non-cancerous)
Not cancer
the cells that make up the growth are similar to other normal cells, grow relatively slowly, and are confined to one location.
Malignant
(or cancerous)
Cancer
the cells are very different from normal cells, grow relatively quickly, and can spread easily to other locations.
Normal Tissue
Tumors are abnormal growths of body tissue. The word tumor is used to describe both abnormal growths that are new (neoplasms) and those present at birth (congenital tumors). No matter where they are located in the body, tumors are usually classed as benign or malignant.
Source: U.S. Department of Health and Human Services, National Institutes of Health, National Institute of Neurological Disorders and Stroke. www.ninds.nih.gov
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