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Am J Kidney Dis. 2000 Mar;35(3):E9.

Disappearance of nodular mesangial lesions in a patient with light chain nephropathy after long-term chemotherapy.

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Third Department of Internal Medicine, Akita University School of Medicine, and the Department of Internal Medicine, Yamamoto General Hospital, Akita, Japan.


A 64-year-old man developed multiple myeloma (kappa light chain type), nephrotic syndrome, and renal insufficiency in 1993. A renal biopsy showed typical histological findings of light chain nephropathy: nodular glomerulosclerosis with deposition of kappa light chains in the mesangial area and subendothelial space of the glomerular capillary walls. Long-term intermittent MEVP chemotherapy (melphalan, 4 mg/d for 4 days; cyclophosphamide, 100 mg/d for 4 days; vincristine, 1 mg/d; prednisolone, 40 mg/d for 4 days) diminished proteinuria and improved renal function. In April 1999, a follow-up biopsy showed remarkable diminution of nodular lesions and disappearance of kappa light chain deposits. Although the prognosis of light chain nephropathy has been considered poor, long-term successful chemotherapy can clear light chain deposits and restore renal function.

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