Collagen disorders: Pathology review

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Collagen disorders: Pathology review

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Questions

USMLE® Step 1 style questions USMLE

7 questions
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A 25-year-old woman comes to the office for evaluation of a lesion on the right ear. She recently had her ear pierced, and she developed the lesion several weeks afterwards. The lesion has continued to grow in size and is occasionally pruritic. She has not experienced ear pain or hearing difficulty. Past medical history is noncontributory. Family history is notable for squamous cell carcinoma in a maternal uncle. Temperature is 37.5°C (99.5°F), blood pressure is 118/73 mmHg, and pulse is 72/min. Physical examination reveals the following finding:


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Which of the following best describes the underlying cause of this patient’s lesion?