Cancer is a disease caused by mutations in genes that control normal growth and cell metabolism. This results in uncontrolled cell growth that is seen as a physically flat.
substances that cause gene mutations that result in cancerous growth called cancer. Such could be the toxins that the substances that are foreign to living cells, eg, poly-cyclic aromatic hydrocarbons (PAH) in cigarette smoke, etc.
Other factors that cause cancer may be physical, such as X-rays and nuclear radiation.
Living organisms can cause the same cancer cell growth and these organisms are called oncogenic viruses. Cancerous growths are named after the organ in the body where the cancer is found. For example,
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