A case of acute renal failure of multiple myeloma due to monoclonal type I cryoglobulinemia with thrombotic microangiopathy

CEN Case Reports
Masaki OkazakiSeiichi Matsuo

Abstract

The term cryoglobulinemia (CG) is used to refer to vasculitis due to so-called mixed cryoglobulins containing immune complexes. Although most cases of monoclonal CG, called type I CG, are asymptomatic, purpura, skin ulcers, and renal failure develop in some cases. Hematological disorders are the underlying diseases in most cases, on which the therapeutic strategies available and the prognosis of patients depends. We here report a case of a 47-year-old man who had pain in both his ankles, with palpable purpura and epistaxis, and presented with acute renal failure. Monoclonal immunoglobulin (Ig) G-κ protein was detected and cryoglobulin was also positive. Renal biopsy revealed emboli with a fibrillar structure in the glomeruli and renal tubule lumina. The complication of thrombotic microangiopathy (TMA) occurred during the course. Therefore, plasma exchange and hemodialysis were added to methylprednisolone pulse therapy. The treatment was successful, dissipating the purpura. However, the purpura relapsed and renal dysfunction progressed when the administration of oral steroids was tapered. Bone marrow biopsy was performed again, which indicated an increase in abnormal plasma cells. The patient was finally diagnosed as multiple my...Continue Reading

References

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Citations

Jul 25, 2021·International Journal of Hematology·Qinjie WengXiaoxia Pan

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