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Cystine stones: a single tertiary center experience
Stavros Sfoungaristos1, Rony Hakim, Ran Katz
11 Urology Department, Hadassah University Hospital , the Hebrew University, Jerusalem, Israel .
Journal of Endourology
|August 19, 2014
Summary
Patients with cystine stones experience their first stone at a younger age and develop larger stones. They require more procedures and face a higher risk of chronic kidney disease compared to calcium oxalate stone formers.
Area of Science:
- Nephrology
- Urology
- Biochemistry
Background:
- Cystine stones, a rare metabolic disorder, result from inherited defects in amino acid transport.
- Calcium oxalate stones are the most common type of kidney stone.
Purpose of the Study:
- To compare the epidemiological, clinical, and therapeutic characteristics of patients with cystine stones versus calcium oxalate stones.
- To evaluate treatment outcomes and identify risk factors associated with cystine stone formation.
Main Methods:
- A retrospective analysis of 30 cystine stone patients matched with 30 calcium oxalate stone patients based on age and gender.
- Data collected included stone size, location, age at first episode, symptoms, treatment procedures, and renal function.
Main Results:
- Cystine stones were larger and more frequently located in the kidney (p<0.001).
- Patients with cystine stones had their first stone episode at a significantly earlier age (p<0.001).
- Cystine stone formers underwent more procedures (p<0.001) and had higher serum creatinine levels (p=0.005).
Conclusions:
- Cystine stones present earlier in life and tend to be larger.
- Patients with cystine stones require more interventions and have an increased risk of developing chronic kidney impairment.
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