A 66-year-old man with diabetes developed acute renal failure after ingestion of Amanita pseudoporphyria Hongo. Laboratory data showed acute nonoliguric renal failure. A renal biopsy showed acute tubular necrosis with glomerular minor abnormalities. He received hemodialysis treatment for 3 weeks and his renal function normalized 2 months after admission. We discuss the differences in acute renal failure caused by possible toxins of Amanita pseudoporphyria Hongo from that caused by other poisonous mushrooms.
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