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Journal of Pediatric Urology (2013) xx, 1e1

LETTER TO THE EDITOR

The influence of weather conditions on urolithiasis I would like to congratulate Wumaner et al. [1] on their study on the incidence of urinary stones in Uyghur children. In their elegant article, the authors underline the role of local environmental factors on the pathogenesis of urolithiasis, concluding that the high number of registered incidences of stones is related to socioeconomic conditions, dietary habits, and geography. In order to confirm the influence of local weather conditions on the pathogenesis not only of urinary stones, but also of the ureterocolic onset, I would like to share our experience, which was reported in 2008 [2], but has been confirmed in subsequent studies (unpublished data). Starting from the analysis of 1-year medical records of residents in the Padova district complaining of renal colic due to ureteric stone, we investigated whether there was an association between the number of episodes of colicky flank pain and temperature/humidity. We demonstrated not only a seasonal variations of incidence of renal colic, but also a clear association between temperature/humidity and stones: we stressed that a temperature above 27  C and a humidity below 45% are risk factors for dehydration. Furthermore, considering the stone-forming process as a disease in shaping, we evaluated for every patient the days preceding the renal colic, and found a major influence of the climatic features of the 15 days preceding each ureteric colic on the specific clinical event.

In order to better understand the real role of weather conditions on urolithiasis in the evaluated children population, instead of simply referring to an association of a higher incidence of stones with a particular season or month, I suggest that the authors to support, in further investigations, their findings with specific temperature and humidity measurements: these additional data could provide interesting indications on the understanding of the pathogenesis of urolithiasis in Uyghur children, and on the planning of an effective screening and preventive program for this population.

References [1] Wumaner A, Keremu A, Wumaier D, Wang Q. High incidence of urinary stones in Uyghur children may be related to local environmental factors. J Pediat Urol 2013. http://dx.doi.org/ 10.1016/j.jpurol.2013.09.002. [2] Boscolo-Berto R, Dal Moro F, Abate A, Arandjelovic G, Tosato F, Bassi PF. Do weather conditions influence the onset of renal colic? A novel approach to analysis. Urol Int 2008;89:19e25.

F. Dal Moro* Department of Surgical, Oncological and Gastroenterological Sciences e Urology, University of Padova, Via Giustiniani 2, 35128 Padova, Italy *Tel.: þ39 0498212720; fax: þ39 0498218757. E-mail address: [email protected]

12 November 2013

1477-5131/$36 ª 2013 Journal of Pediatric Urology Company. Published by Elsevier Ltd. All rights reserved. http://dx.doi.org/10.1016/j.jpurol.2013.11.007

Please cite this article in press as: Dal Moro F, The influence of weather conditions on urolithiasis, Journal of Pediatric Urology (2013), http://dx.doi.org/10.1016/j.jpurol.2013.11.007

The influence of weather conditions on urolithiasis.

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