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Abstract

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·ÎºÒ¸°Ç÷Áõ, °ñ¼öÁ¾°ü·Ã¼¼´¢°ü½ÅÁõ(myeloma associated tubulopathies), °æ¼â ¶Ç´Â Áß¼â ħÂø
Áúȯ µîÀÌ ÀÖ´Ù. ÀÌÁß °æ¼âħÂøÁúȯ(light chain deposition disease)Àº °æ¼âÁß ÁÖ·Î KÇü °æ
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Light chain deposition disease of kidney is characterized by deposition of monoclonal
immunoglobulin light chain and electron-dense material in glomerular and tubular
basement membrane and usually associated with multiple myeloma or other plasma cell
dyscrasia. With light chain deposition disease affecting kidney, three clinical patterns
have been recognized; nephrotic syndrome, rapidly progressive renal failure and slowly
progressing chronic renal failure. The majority of patients present proteinuria and renal
insufficiency. Cytotoxic therapy has been considered as treatment of choice. Favorable
effect of melphalan given together with prednisone has been reported in a few cases.
A 64-year-old male was admitted with generalized edema and exertional dyspnea, and
was presumptively diagnosed as congestive heart failure and hypertension. He also
presented increased serum creatinine and nephrotic range proteinuria. Urine protein
electrophoresis and urine and serum immunoelectrophoresis revealed monoclonal
gammopathy of IgG kappa type. Work up for multiple myeloma including bone marrow
biopsy showed results compatible with smoldering myeloma. Renal biopsy showed
findings of light chain deposition disease and Congo-red positive amyloidosis. After we
urea fed the patient with melphalan and predinsone for two cycles, amount of proteinuria
and serum area tinine were decreased.

Å°¿öµå

Light chain deposition disease; Renal amyloidosis; Nephrotic syndrome;

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