Vascular Disease USMLE Step 1 Practice Question
A 29-year-old woman presents with refractory hypertension (BP 168/104 mmHg, HR 92 bpm). She denies smoking, diabetes, and hyperlipidemia. Physical examination reveals no abdominal bruits. Serum creatinine is 0.9 mg/dL. Renal artery duplex ultrasound demonstrates a characteristic "string of beads" appearance of the right renal artery with 60% stenosis. She takes lisinopril and amlodipine without adequate blood pressure control. Which diagnosis best explains these findings?
Answer choices
- AAortic coarctation
- BPolyarteritis nodosa
- CAtherosclerotic renal artery stenosis
- DTakayasu arteritis
- EFibromuscular dysplasiaCorrect answer
- FRenovascular hypertension secondary to renal artery dissection
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