Dramatic remission of nephrotic syndrome after unusual complication of mucormycosis in idiopathic membranous nephropathy.

Mucormycosis is a rare and fatal opportunistic infection occurring in severely immunocompromised patients. Here, we report, for the first time, on a 65-year-old man with idiopathic membranous nephropathy and moderate renal dysfunction who suffered from life-threatening pulmonary mucormycosis during immunosuppressive therapy. After amphotericin B (AmB) administration with a total accumulating dose of 1.5 g, not only has he recovered from this fatal infection, but also his nephrotic syndrome has entered complete and long-term remission without any continued corticosteroid and immunosuppressive therapy during the 6-year follow-up. Serum creatinine levels remained stable by adjusting the tolerable daily dose of AmB during the period of treatment.