02-28-2009, 09:27 AM
A 19-year-old man is evaluated for gross hematuria. Two days ago, he was diagnosed with pharyngitis. A similar episode occurred approximately 1 year ago.
On physical examination, blood pressure is 150/90 mm Hg. The remainder of the examination is normal except for a resolving pharyngitis.
Laboratory Studies
Blood urea nitrogen: 14 mg/dL (5 mmol/L)
Creatinine: 0.9 mg/dL (79.58 μmol/L)
C3: 130 mg/dL (1300 mg/L)
C4: 30 mg/dL (300 mg/L)
Urinalysis: No proteinuria, numerous dysmorphic erythrocytes and 1 erythrocyte cast/hpf
Which of the following is the most likely diagnosis?
A Systemic lupus erythematosus
B Antineutrophil cytoplasmic antibody“associated small-vessel vasculitis
C Postinfectious glomerulonephritis
D Cryoglobulinemic glomerulonephritis
E IgA glomerulonephritis
On physical examination, blood pressure is 150/90 mm Hg. The remainder of the examination is normal except for a resolving pharyngitis.
Laboratory Studies
Blood urea nitrogen: 14 mg/dL (5 mmol/L)
Creatinine: 0.9 mg/dL (79.58 μmol/L)
C3: 130 mg/dL (1300 mg/L)
C4: 30 mg/dL (300 mg/L)
Urinalysis: No proteinuria, numerous dysmorphic erythrocytes and 1 erythrocyte cast/hpf
Which of the following is the most likely diagnosis?
A Systemic lupus erythematosus
B Antineutrophil cytoplasmic antibody“associated small-vessel vasculitis
C Postinfectious glomerulonephritis
D Cryoglobulinemic glomerulonephritis
E IgA glomerulonephritis