John D. Boyer, M.D.

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female person barefoot legs heel walking by scenic sandy ocean
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Sun Sense: Skin Cancer Prevention Tips

• Avoid sun between 10am – 4pm• Wear a hat (broad brimmed)• Sunscreen daily: SPF 30 UV A&B• Apply sunscreen frequently & generously• Sunscreen promotes

A case of an invasive squamous cell carcinoma.
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Squamous Cell Carcinoma of the Skin

Facts & Features• Second most common human cancer• Arise on sun exposed skin or lips• Pink or red growths or bumps• Locally destructive and can

a malignant tumor of human skin
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Malignant Melanoma

Facts & Features• A new or changing mole in 70% of cases• ABCDE’s of MelanomaA = asymmetryB = irregular borderC = irregular colorD = diameter

A case of nodular basal cell carcinoma
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Basal Cell Carcinoma

Facts & Features• Most common human cancer• Will affect 1 in 5 Americans• Pink or flesh toned growths or non-healing sores• 85% on head or

sunspots on sun-damaged skin of the hand of a man
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Actinic Keratosis

Facts & Features• Extremely common• Pink or scaling growths• Pre-cancerous in nature• Arise on sun damaged skin• May evolve into invasive skin cancer• May be

John D. Boyer, M.D.