BK Nephropathy in Renal Transplant Patients with Epididymo-Orchitis

The patient was a 10-year-old male that was transplanted six months prior to this study. He was admitted because of epididymo-orchitis, pyuria, glucosuria, and rising blood urea nitrogen (BUN) and creatinine (Cr). BK viruria copy number was 50,000,000. In renal biopsy examination, acute cellular rejection was reported. The diagnosis was BK virus epididymo orchitis with BK allograft nephropathy. His treatment was started by discontinuation of tacrolimus and mycophenolate and starting of leflunomide and low dose prednisolone. After improvement of renal dysfunction and BK load, the treatment regimen was changed to cyclosporine and sirolimus. Renal function after the one-year follow up did not change and remained in a good condition.