Crescentic glomerulonephritis developing 3 months after autologous peripheral blood stem cell transplantation for non-Hodgkin's lymphoma

A 64-year-old woman underwent an ileocecal resection for ileus, The specimen revealed a diffuse large B cell lymphoma. The diagnosis was stage IIA non-Hodgkin's lymphoma. She received chemotherapy with the CHOP-etoposide regimen, resulting in partial remission. High-dose etoposide was used for PBSC mobilization before auto-PBSCT. Conditioning was ranimustine, carboplatin, etoposide and cyclophosphamide. Her renal function deteriorated gradually, starting 3 months post-PBSCT. Eight months post-transplant, serum creatine concentration was 7.1 mg/dl, and BUN was 59.2 mg/dl. Her hemoglobin concentration decreased to 5.3 g/dl, with no evidence of hemolysis, Renal biopsy revealed fibrous crescent formations in glomeruli, and mononuclear cell infiltration in interstitial spaces. Renal injury in this patient differs from BMT nephropathy, which is similar to hemolytic uremic syndrome, and represents another type of late renal injury after PBSCT.