Renal and Urinary: Glomerulonephritis, AKI · USMLE Step 1

A biopsy shows 'tram-track' appearance of the basement membrane. Which condition is this?

  1. Minimal change disease
  2. Membranous nephropathy
  3. Membranoproliferative GN
  4. IgA nephropathy
Show answer and explanation

Correct answer: Membranoproliferative GN

MPGN shows splitting of the basement membrane, giving a tram-track appearance on microscopy.

Difficulty: Medium Question 16 of 20

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