Spectrum of stones composition: A chemical analysis of renal stones of patients visiting NMCTH

Abstract

A general observation of clinicians suggests that the prevalence of urolithiasis is fairly high in Kathmandu but
so far no systematic study has been undertaken here to explore the etiopathogenesis of disease in this region.
In this preliminary communication, we present herewith the qualitative composition of 47 renal stones
collected from surgical patients admitted to NMCTH over a period of 13 months (July 2005 to July 2006). All
stones were of mixed type. Calcium was present in all stones. Oxalate, phosphate and uric acid were present
in 95.7%, 87.2% and 34.0% patients respectively. The probable composition, as construed from analysis,
suggests that calcium oxalate stones are predominant. Strikingly, the prevalence was very high in ≥20 yrs age
group.