We present a case of a 79-years old woman with acute anuric renal failure due to biopsy confirmed immunotactoid glomerulonephritis. Despite biclonal gammopathy IgG lambda, no hematologic or any other underlying malignancy was found. A possible association with viral hepatitis, cryoglobulinemia or autoimmune disease was also excluded. The patient was treated with pulse i.v. dexamethasone with very good results. Diuresis resumed and renal function gradually normalized. Our patient is one of the oldest patients with immunotactoid glomerulonephritis described. The presentation by acute renal failure with an improvement of renal function after therapy has not been previously published.

        Key words: Immunotactoid glomerulonephritis - Anuria - Paraproteinemia - Corticosteroides