Tag Archive for Malignant Tumors

What is a Benign Tumor? What is a Malignant Tumor?

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A tumor is an abnormal mass of tissue that has formed a lump. It’s called benign if it grows slowly and is self-limiting; that is, if it doesn’t have the capacity to invade nearby tissues and spread beyond its original site.

A malignant, or cancerous, tumor, on the other hand, is innately dangerous because its cells can divide uncontrollably and produce virtually immortal daughter cells. Malignant tumor cells can penetrate and destroy adjacent tissue, and can metastasize, or travel through the circulation to distant parts of the body and form new tumors.

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