The differential diagnosis of TMA includes:^[1]

• Hemolytic uremic syndrome (HUS).
• Thrombotic thrombocytopenic purpura (TTP).
• HIV associated TTP.

• Disseminated intravascular coagulation (DIC).
• Malignant hypertension.
• Scleroderma renal crisis.
• Antiphospholipid antibody syndrome (APLA).

• Drug toxicity, e.g. calcineurin inhibitor toxicity.

• 
  High mag.
• 
  Very high mag.
• 
  High mag.
• 
  Very high mag.

Another case - with chronic changes:

• 
  Intermed. mag.
• 
  High mag.
• 
  Very high mag.