Anti-glomerular basement membrane nephritis concurrent with lupus nephritis

Shimoda Saeko, Miki Sho, Taniguchi Keisuke, Hagihara Kouichirou, Fumihara Daiki, Iwanari Sachio, Ikeda Masaki, Tanaka Mari, Takeoka Hiroya, Oka Kazumasa

doi:10.4009/jsdt.49.833

A 43-year old male was admitted to our hospital because of nephrotic syndrome and an acute kidney injury. He had a history of lupus nephritis type V 8 years ago, but had achieved complete remission after treatment. Serological tests showed elevated anti-glomerular basement membrane antibody levels. A kidney biopsy examination showed crescentic glomerulonephritis without IgG deposits. Thus, a diagnosis of lupus nephritis type IV＋V was made. Steroid therapy was started, and plasma exchange was performed. Despite these therapies, the patient's renal function deteriorated, and hemodialysis was initiated. Intravenous cyclophosphamide pulse therapy was added, but the patient's renal function did not improve. A second kidney biopsy was performed on the 48th day. It showed the linear deposition of IgG along the capillary wall, which led to a diagnosis of anti-glomerular basement membrane disease. A further immunosuppressive regimen was considered to be ineffective. Therefore, the steroid therapy was tapered, and hemodialysis was continued. This case report demonstrates that anti-glomerular basement membrane disease can occur during the course of lupus nephritis.

Anti-glomerular basement membrane nephritis concurrent with lupus nephritis

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