Last updated on: January 23rd, 2024

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You’re looking at a multiple-choice question from QBank Prepper (the newest of four distinct learning formats available in Clinical Odyssey). Try it out, and have fun improving your clinical skills.

Vasculitis 1

A 9-year-old boy is brought to the emergency department with a 4-day history of fever, abdominal pain, and a rash on his lower legs. On examination, temperature is 38.5˚C (101.3˚F), pulse is 110/min, respirations are 20/min, and blood pressure is 90/60 mm Hg. Physical examination reveals a petechial rash on the lower legs and ankles. Abdominal examination is notable for tenderness in the right lower quadrant. Urinalysis shows mild hematuria and proteinuria. Laboratory tests show hemoglobin 12 g/dL (11.5-14.5), leukocytes 6200/uL (4500-13000), platelets 246000/uL (187000-400000), creatinine 0.5 mg/dL (0.3-0-7), blood urea nitrogen 12 mg/dL (6-24). Coagulation studies were normal. Which of the following is the most likely diagnosis?

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