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Saudi Journal of Kidney Diseases and Transplantation
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CASE REPORT Table of Contents   
Year : 2019  |  Volume : 30  |  Issue : 4  |  Page : 953-959
A “double-seropositive” Vasculitis for antiglomerular basement membrane antibodies and antineutrophil cytoplasmic antibody, and multiple myeloma, all three with simultaneous diagnosis of renal involvement, common pathophysiology, or pure coincidence? first case in the World

Department of Nephrology-Hemodialysis and Kidney Ttransplantation, University Hospital Mohammed VI, Marrakech, Morocco

Correspondence Address:
Mariam Chettati
Department of Nephrology-Hemodialysis and Kidney Transplantation, University Hospital Mohammed VI, Marrakech
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/1319-2442.265473

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The combination of Goodpasture’s disease and antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis is not exceptional. However, to the best of our knowledge, their association with multiple myeloma (MM) with kidney involvemen thas not been described. We report probably the first case of double-seropositive vasculitis for antiglomerular basement membrane (GBM) antibodies and ANCA associated with MM with renal involvement. A 60- year-old-female presented with severe acute kidney injury. Three months earlier, she had a history of bone pain. Blood workup found a creatinine of 1100 μmol/L and a C-reactive protein of 60 mg/L. Anti-GBM antibodies returned positive at 400 U/mL and pANCA positive at 380 U/mL. Plasma protein immunofixation found a monoclonal immunoglobulin G (IgG) KAPPA peak; the myelogram found a 10% plasmocytosis. On the day 4 of hospitalization, the patient presented with alveolar hemorrhage. The renal biopsy showed diffuse crescentic glomerulo-nephritis with linear glomerular deposits of IgG, with kappa light chain cast nephropathy. The association between vasculitis and malignant blood disease is very rare; the pathophysiology of this association remains unclear. It would seem interesting to look for possible ANCA or anti- GBM activity carried by the monoclonal immunoglobulin.

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