Definition

The term malignancy refers to cancerous cells that usually have the ability to spread, invade, and destroy tissue. Malignant cells tend to have fast, uncontrolled growth. Malignant cells that are resistant to treatment may return after being removed or destroyed.

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Review Date:7/29/2005
Reviewed By: William Matsui, M.D., Assistant Professor of Oncology, Division of Hematologic Malignancies, The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD. Review provided by VeriMed Healthcare Network.