According to typical diameter guidelines, when is a skin spot considered benign?

According to typical diameter guidelines, when is a skin spot considered benign?

• A. >1 cm diameter
• B. <5-6 mm diameter
• C. 8-10 mm diameter
• D. 6-7 mm diameter

Answer: (B)

Diameter is a key part of screening skin lesions, with a commonly used threshold around 6 millimeters. Lesions smaller than about 5–6 mm are generally considered benign based on diameter alone, because melanoma risk increases with size. So a skin spot less than six millimeters fits the typical benign pattern for diameter. Remember, this is not absolute—benign-appearing lesions can exist and some melanomas can be small, but by diameter alone, the smaller size is the least concerning. Larger sizes described in the options would raise suspicion and merit closer evaluation, and always consider other features like asymmetry, border, color, and change over time.

Diameter is a key part of screening skin lesions, with a commonly used threshold around 6 millimeters. Lesions smaller than about 5–6 mm are generally considered benign based on diameter alone, because melanoma risk increases with size. So a skin spot less than six millimeters fits the typical benign pattern for diameter. Remember, this is not absolute—benign-appearing lesions can exist and some melanomas can be small, but by diameter alone, the smaller size is the least concerning. Larger sizes described in the options would raise suspicion and merit closer evaluation, and always consider other features like asymmetry, border, color, and change over time.