Table of Contents

HK J Paediatr (New Series)
Vol 22. No. 2, 2017

HK J Paediatr (New Series) 2017;22:110-112

Case Report

Chronic Renal Failure in Boy with Bilateral Cystine Nephrolithiasis

MA Arrabal-Polo, MdC Cano-García, M Arrabal-Martín


Cystinuria is a rare cause of stone disease and has a peak age of presentation in the third decade of life. However, it can also present during the first decade of life with acute renal failure, anuria or other symptoms. We present a case of a 13-year-old boy with multiple and bilateral cystine stones and high excretion of cystine in the urine (981 mg/24 h; 4082 μmol/24 h) producing chronic renal insufficiency grade 3 (creatinine clearance 55 ml/min). Medical treatment with potassium citrate, acetazolamide and captopril, and percutaneous nephrolithotomy and retrograde ureteroscopy were chosen for this case. Cystinuria is a rare condition, but when it does occur, timely diagnosis, appropriate treatment and close follow up are important to avoid severe clinical complications. Appropriate treatments include urine alkalinisation, decreasing cystine supersaturation and intake of 4 liters of water per day.

Keyword : Chronic renal failure; Cystine stones; Cystinuria; Paediatric age

Abstract in Chinese


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