USMLE® Step 1 style questions USMLE
USMLE® Step 2 style questions USMLE
A 69-year-old woman comes to the emergency department because of a throbbing headache, fatigue, a fever, and polymyalgia rheumatica, specifically claudication of her jaw and arms, for the past day. Patient’s medical history includes common headaches due to temporal arteritis. Physical examination shows that heart rate/rhythm and blood pressure are within normal ranges. Bruits are heard over the carotid arteries on auscultation. Laboratory results show that the erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP) are elevated. Magnetic resonance imaging (MRI) scan shows a high signal intensity within the aortic wall. Which of the following is the most likely explanation for this patient’s findings?