[A case of nephrocalcinosis due to Sjögren syndrome associated with renal tubular acidosis].

A 39-year-old women was admitted to the hospital because of fever, lumbago and recurrent history of spontaneous stone discharge. An abdominal X-ray film demonstrated multiple calculi in the medullary positions of both kidneys and right multiple ureteral stones. Laboratory examinations showed hypergammaglobulinemia and the urine pH level was fixed around 7; nevertheless general metabolic acidosis existed. These laboratory data indicated nephrocalcinosis due to Sjögren syndrome associated with renal tubular acidosis. Right multiple ureteral stones were removed by transurethral ureteroscopy. After starting alkali therapy, neither increased nor recurrent stone formation was recognized.