Skin cancer Quiz: Ace Your Exams

Get ready to dominate your medical and nursing exams by using our dynamic quizzes to elevate your knowledge and increase your confidence. Whether you're gearing up for the USMLE®, COMLEX®, or your next in-class assessment, Osmosis quizzes tackle key topics in pathology, diagnostics, and treatment approaches. By honing in on clinical readiness and decision-making, we make sure the knowledge you gain empowers you both in the classroom and in real-world practice. Jump in and supercharge your exam prep!

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A 44-year-old man comes to the office because of an ulcerating lesion on his right elbow. The lesion is painless and nonpruritic but has been gradually increasing in size over the past few months. He works as a farmer and spends most of his time outdoors. He has smoked 2 packs of cigarettes per day for the past 8 years. Past medical history is significant for hepatitis C virus infection 10 years ago. Family history is significant for nodular basal cell carcinoma in his father. Temperature is 37.0°C (98.6°F), pulse is 82/min, respirations are 14/min, and blood pressure is 135/85 mmHg. Physical examination shows a 1.5-cm indurated plaque with ulceration on the right elbow. Biopsy of the lesion shows dysplastic keratinocytes with keratin pearls involving the full thickness of the epidermis. Which of the following factors most increased his risk of developing this lesion?  

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