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J Urol. 2005 Mar;173(3):858-61.

Time to development of symptomatic urinary calculi in a high risk environment.

Author information

  • 147th Combat Support Hospital, Fort Lewis, Washington, USA. karen.evans@amedd.army.mil

Abstract

PURPOSE:

While seasonal variation of stone disease is well described, the time to formation of urinary calculi is unknown. Because southwestern Asia is a high risk environment for stone disease, the date of entry into this region is a definitive beginning to a period of increased risk of urinary calculi. The recent influx of Department of Defense personnel into southwestern Asia provided the opportunity to observe stone disease in a cohort of healthy personnel during a well-defined period of increased risk of stone formation.

MATERIALS AND METHODS:

A database was constructed for all patients presenting with symptomatic urinary calculi to a single military hospital deployed to Kuwait from March through August 2003. Patient demographics, stone characteristics and time to formation of symptomatic urinary calculi were evaluated.

RESULTS:

A total of 182 patients were diagnosed with 218 symptomatic stones. Mean time to formation of symptomatic urinary calculi was 93 days with a standard deviation of 42 days.

CONCLUSIONS:

This study provides unprecedented information about the development of symptomatic urinary calculi in a high risk environment. While unique aspects of the population, environment and medical system created a singular opportunity to study stone disease, the results of this study are applicable to the general population.

[PubMed - indexed for MEDLINE]
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