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			| Melanoma skin cancer sign: Diameter Melanoma is the most serious type of skin cancer. The
		most important warning sign of melanoma is a change in
		the size, shape, or color of a mole or other skin growth, such as a birthmark.  A change in diameter (width) is one thing to watch for. Call your doctor if:The
		width of a mole or skin growth is larger than 1/4 inch (6 mm), or about
		the size of a pencil eraser.Any
		mole seems to be growing, even if it is still smaller than 1/4 inch (6
		mm).
ByHealthwise StaffPrimary Medical ReviewerKathleen Romito, MD - Family Medicine
 Adam Husney, MD - Family Medicine
 Specialist Medical ReviewerAmy McMichael, MD - Dermatology
Current as of:
                May 3, 2017Author:
          Healthwise Staff  Medical Review:
          Kathleen Romito, MD - Family Medicine & Adam Husney, MD - Family Medicine & Amy McMichael, MD - Dermatology |  |  |  |  |  |