Chronic Kidney Disease USMLE Step 1 Practice Question
A 7 year old boy is brought to the clinic because of facial puffiness and dark urine. Three weeks ago he had impetigo that was treated symptomatically at home. He now has blood pressure of 138/88 mm Hg and mild pedal edema. Urinalysis shows red blood cell casts and mild proteinuria. Which of the following additional findings is most likely?
Answer choices
- AHexagonal urine crystals
- BUrine eosinophils
- CHigh serum aldosterone with metabolic alkalosis
- DMarked hypercalcemia
- ELow serum complement levelCorrect answer
- FElevated serum IgA with mesangial IgA deposits on immunofluorescence
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