Squamous cell carcinoma can arise from-a) Long standing venous ulcersb) Chronic lupus vulgarisc) Rodent ulcerd) All of the above
• It is a carcinoma of the cells of epidermis that usually migrate outwards to the surface.
• Originate from prickle cell layer; Seen in > 40 years of age
• MC skin cancer in darkly pigmented races
• 2nd MC skin cancer in light skinned races
• MC causative factor: Sunlight
• MC site: Ears, cheeks, lower lip and back of hands
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a
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