Oregon Esthetician State Board

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In detection of melanoma, what does the 'Diameter' refer to?

The size of the skin lesion
The thickness of the skin
The time of evolution
The color of the lesion

The correct answer is: The size of the skin lesion

The term 'Diameter' in the context of melanoma detection specifically refers to the size of the skin lesion. When assessing moles or growths for signs of melanoma, healthcare professionals often use the ABCDE rule, which stands for Asymmetry, Border, Color, Diameter, and Evolving. The 'Diameter' criterion indicates that a lesion measuring more than 6 millimeters (the size of a pencil eraser) should raise suspicion for melanoma. This indicates that larger lesions may be more concerning and require further evaluation. The other aspects, like thickness, evolution over time, and color, help evaluate different characteristics of the lesion but do not pertain specifically to the measurement of its size. Focusing on the diameter allows for an important quantitative assessment of risk related to melanoma.