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Cancer

By Terry Martin, About.com

Updated August 05, 2008

About.com Health's Disease and Condition content is reviewed by our Medical Review Board

Smoking and Cancer

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Definition:
Cancer is defined as any malignant growth or tumor caused by abnormal and uncontrolled cell division. Cancer may spread to other parts of the body through the lymphatic system or bloodstream.

Smoking is a risk factor for many forms of cancer.

See also:

Also Known As: carcinoma
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