Acute Kidney Injury USMLE Step 1 Practice Question
A 26 year old man comes to the emergency department with hemoptysis, fatigue, and decreased urine output for 5 days. Examination shows mild bibasilar crackles and hypertension. Serum creatinine is markedly elevated. Urinalysis reveals hematuria with red cell casts. Kidney biopsy shows crescent formation, and immunofluorescence demonstrates a linear pattern of IgG deposition along the glomerular basement membrane. Which of the following is the most likely diagnosis?
Answer choices
- APoststreptococcal glomerulonephritis
- BGoodpasture syndromeCorrect answer
- CGranulomatosis with polyangiitis
- DMinimal change disease
- EMembranous nephropathy
- FAnti-glomerular basement membrane disease without pulmonary involvement
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