The ABCD's of Melanoma
Most people have a number of brownish spots on their skin -
freckles, birthmarks, moles. Almost all such spots are normal, but
some may be skin cancers. Key warning signs of melanoma are shown
below. Be alert to irregularities in shape, edges, color, and size.
The ABCD's of melanoma are as follows: Asymmetry, Border irregularity,
Color variability, and Diameter larger than a pencil eraser.
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Assymetry – Most early
melanomas are asymmetrical: a line through the middle would
not create matching halves. Common moles are round and symmetrical.
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Border – The borders of
early melanomas are often uneven and may have scalloped or
notched edges. Common moles have smoother, more even borders.
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Color – Common moles usually
are a single shade of brown. Varied shades of brown, tan,
or black are often the first sign of melanoma. As melanomas
progress, the colors red, white and blue may appear.
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Diameter – Early melanomas
tend to grow larger than common moles - generally to at least
the size of a pencil eraser (about 6mm, or 1/4 inch, in diameter).
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If you detect any of these warning signs, see a physician promptly.
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