Melanoma usually appears at the site of a preexisting mole.

Name: Melanoma usually appears at the site of a preexisting mole.
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Quizplus · Accepted Answer

Melanoma can arise from a preexisting mole or can develop on normal skin. However, about 30 to 40 percent of melanomas develop from an existing mole. It is important to monitor any changes in size, shape, or color of moles and to consult a doctor if there is any concern.

Melanoma Usually Appears at the Site of a Preexisting Mole