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  1. saravanakumar
  2. General Nephrology Questions
  3. Monday, 29 August 2016
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why does muddy brown cast in acute tubular necrosis appear brown ?
  Chennai, Tamil Nadu, India
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Responses (1)
Accepted Answer Pending Moderation
Muddy brown casts of ATN are also known as heme-granular casts. There is likely some staining of the cast by hemoglobin released in to the urine when red cells leak in to the renal tubule as a response to injury.

That would be my best hypothesis.

Dr. Jordan Weinstein
  1. more than a month ago
  2. General Nephrology Questions
  3. # 1
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