Definition
Cancer is the uncontrolled growth of abnormal cells in the body. Cancerous cells are also called malignant cells.
Alternative Names
Carcinoma; Malignant tumor
Causes, incidence, and risk factors
Cells are the building blocks of living things. Cancer grows out of normal cells in the body. Normal cells multiply when the body needs them, and die when the body doesn't need them. Cancer appears to occur when the growth of cells in the body is out of control and cells divide too quickly. It can also occur when cells “forget” how to die.
Cancer at Yahoo Health
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