Breast 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 50-year-old woman comes to the clinic due to right breast erythema and tenderness that have progressed over the past 2 weeks. She is generally healthy and has not experienced any trauma in the area. Her only medication is a daily multivitamin. Family history is negative for cancer. Temperature is 37.0°C (98.6°F), pulse is 65/min, and blood pressure is 125/70 mmHg. On physical examination, the skin on the right breast is indurated and thickened with dimpling of the hair follicles. A palpable lymph node is present in the right axilla. The nipple appears normal. A core needle biopsy reveals an invasive carcinoma. Which of the following is most likely responsible for this patient’s skin findings?  

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