ABCDs of melanoma skin cancer


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ABCDs of melanoma skin cancer


Illustration of the ABCDs of melanoma.

Source: NCI Visuals Online. Skin Cancer Foundation. http://visualsonline.cancer.gov/about.cfm

The ABCDs of melanoma skin cancer are:

  • Asymmetry. One half doesn't match the appearance of the other half.
  • Border irregularity. The edges are ragged, notched, or blurred.
  • Color. The color (pigmentation) is not uniform. Shades of tan, brown, and black are present. Dashes of red, white, and blue add to a mottled appearance.
  • Diameter. The size of the mole is greater than 1/4 inch (6 mm), about the size of a pencil eraser. Any growth of a mole should be evaluated.

Credits


Primary Medical Reviewer Kathleen Romito, MD - Family Medicine
Specialist Medical Reviewer Randall D. Burr, MD - Dermatology
Last Updated January 11, 2007

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Last updated: January 11, 2007
Reviewed By: Kathleen Romito, MD - Family Medicine, Randall D. Burr, MD - Dermatology

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