A 63-Year-Old Man Comes to the Emergency Department Due to Abdominal

A 63-year-old man comes to the emergency department due to abdominal pain.  Physical examination shows abdominal tenderness without guarding or rebound.  His laboratory test results are as follows: On further investigation, magnetic resonance angiography of the abdomen reveals mesenteric vein thrombosis.  Flow cytometry shows absence of CD55 on the surface of red blood cells.  Which of the following is the most likely pathologic renal finding in this patient?

A) Cast nephropathy
B) Hemosiderosis
C) Interstitial nephritis
D) Membranous glomerulonephritis
E) Minimal change disease

Correct Answer:

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