Anatomy clinical correlates 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 40-year-old man comes to the dermatology clinic for evaluation of a skin lesion. He does not have pain, itching, or discharge from the lesion. He states that it has been present since birth, and he has not noted any significant changes in its appearance. Past medical history includes testicular cancer treated with orchiectomy five years ago. Family history is unremarkable. Vital signs are within normal limits. Physical examination shows a 0.5 cm, single, well-demarcated reddish-brown papule inferior to the left breast. Both breasts and axilla appear normal. Which of the following best describes the underlying cause of this patient’s presentation?

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Clonal proliferation of benign melanocytes

Failed involution of the mammary ridge

Abnormal response to gonadal hormones

Obliteration of the milk line during embryogenesis

Inflammation of the sebaceous glands of Montgomery