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Your doctor may find skin growths during a routine visit even if you haven't noticed any symptoms. He or she can't know for sure if it is cancer unless some of the tissue is tested. The only way to test the tissue is to remove some or all of it in a process called a biopsy. Then a special doctor called a pathologist looks at the sample to note the presence and type of cancer cells. Many times, doing the biopsy and removing the cancer are performed at the same time.
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In most cases, nonmelanoma skin cancer is confined to the skin and is easily treated and cured. If skin cancer has spread, then your doctor will want to know the extent or stage of the skin cancer. This helps your doctor decide whether more treatment is needed and if so, which treatments might be best.
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