[Less common causes of chronic tubulointerstitial nephritis complicated by acquired Fanconi syndrome]

The authors describe an uncommon form of the disease in a 25-year-old man who developed renal failure on the background of tubulointerstitial nephritis combined with acquired Fanconi syndrome. The authors analyze in detail the results of the laboratory examination and present differential diagnostic reflections which lead, after elimination of other possibilities, to the final diagnosis of immunity-mediated, viral antigen-conditioned tubulointerstitial nephritis.