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KMID : 1128320170150010017
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Electrolytes & Blood Pressure
2017 Volume.15 No. 1 p.17 ~ p.22
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Renal Tubular Acidosis in Patients with Primary Sjogren's Syndrome
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Jung Su-Woong
Park Eun-Ji
Kim Jin-Sug
Lee Tae-Won
Ihm Chun-Gyoo
Lee Sang-Hoon
Moon Ju-Young
Kim Yang-Gyun
Jeong Kyung-Hwan
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Abstract
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Primary Sjogren's syndrome (pSS) is characterized by lymphocytic infiltration of the exocrine glands resulting in decreased saliva and tear production. It uncommonly involves the kidneys in various forms, including tubulointerstitial nephritis, renal tubular acidosis, Fanconi syndrome, and rarely glomerulonephritis. Its clinical symptoms include muscle weakness, periodic paralysis, and bone pain due to metabolic acidosis and electrolyte imbalance. Herein, we describe the cases of two women with pSS whose presenting symptoms involve the kidneys. They had hypokalemia and normal anion gap metabolic acidosis due to distal renal tubular acidosis and positive anti-SS-A and anti-SS-B autoantibodies. Since one of them experienced femoral fracture due to osteomalacia secondary to renal tubular acidosis, an earlier diagnosis of pSS is important in preventing serious complications.
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KEYWORD
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Sjogren's syndrome, Osteomalacia, Renal tubular acidosis, Hypokalemia
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