Which feature is most worrisome in the ABCDE criteria for melanoma?

Which feature is most worrisome in the ABCDE criteria for melanoma?

• A. Evolution
• B. Asymmetry
• C. Border irregularity
• D. Diameter >6 mm

Answer: (A)

The idea being tested is that changes in a skin lesion over time are the most alarming sign for melanoma. A lesion that evolves—grows in size, changes shape, shifts in color, or develops new symptoms like itching or bleeding—suggests active tumor progression and malignancy. Static features such as irregular borders, color variation, or a diameter over 6 mm can occur in benign nevi as well, but they don’t by themselves indicate ongoing transformation. Evolution, by contrast, reflects that the lesion is not stable and may be advancing, which is why it’s given the greatest weight in melanoma assessment.

The idea being tested is that changes in a skin lesion over time are the most alarming sign for melanoma. A lesion that evolves—grows in size, changes shape, shifts in color, or develops new symptoms like itching or bleeding—suggests active tumor progression and malignancy. Static features such as irregular borders, color variation, or a diameter over 6 mm can occur in benign nevi as well, but they don’t by themselves indicate ongoing transformation. Evolution, by contrast, reflects that the lesion is not stable and may be advancing, which is why it’s given the greatest weight in melanoma assessment.