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Metabolic abnormalities associated with calyceal diverticular stones
Brian K Auge1, Michaella E Maloney, Barbara J Mathias
1Department of Urology, Naval Medical Center, San Diego, CA, USA.
BJU International
|April 29, 2006
Summary
Patients with calyceal diverticular stones often have metabolic abnormalities, similar to other stone formers. Selective medical therapy effectively corrected these issues, leading to an 83% remission rate in a small study group.
Area of Science:
- Urology
- Nephrology
- Metabolic Medicine
Background:
- Calyceal diverticular stones are associated with metabolic abnormalities that contribute to stone development.
- Understanding these metabolic factors is crucial for effective stone management.
Purpose of the Study:
- To analyze metabolic profiles of patients with calyceal diverticular stones.
- To evaluate the impact of targeted medical therapy on preventing stone recurrence.
Main Methods:
- Retrospective review of 37 patients undergoing endoscopic treatment for calyceal diverticular calculi.
- Comparison of 24-hour urine collections from patients and 20 controls.
- Calculation of stone formation rates before and after medical therapy.
Main Results:
- All 12 analyzed diverticulum patients exhibited at least one metabolic abnormality, including hypercalciuria, hyperuricosuria, mild hyperoxaluria, low urine volume, and hypocitraturia.
- Metabolic abnormalities were comparable between diverticulum patients and controls.
- Selective medical therapy achieved an 83% remission rate (5/6 patients) over a mean follow-up of 23.1 months.
Conclusions:
- Metabolic evaluation is essential for all patients with symptomatic calyceal diverticular stones.
- Identified metabolic abnormalities can be successfully managed with selective medical therapy.
- This approach significantly reduces the risk of recurrent stone formation.
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