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  • Title: Composition of kidney stone fragments obtained after extracorporeal shock wave lithotripsy.
    Author: Ribeiro da Silva SF, Leite da Silva S, De Francesco Daher E, de Holanda Campos H, Bruno da Silva CA.
    Journal: Clin Chem Lab Med; 2010 Mar; 48(3):403-4. PubMed ID: 20113249.
    Abstract:
    BACKGROUND: The objective of this study was to determine the composition of kidney stone fragments obtained after extracorporeal shock wave lithotripsy (ESWL). METHODS: Kidney stone fragments from 25 patients with urolithiasis treated with ESWL were submitted for morphological analysis. The composition was determined for all the recovered fragments. RESULTS: Thirteen patients (52%) had pure stones. The most common type of pure stone was calcium oxalate (61.6%), of which half was the monohydrate type (COM) and half was the dihydrate type (COD). The other pure stones consisted of either uric acid (30.8%) or struvite (7.6%). For mixed stones, the most frequently observed component was COM or COD (50%), followed by a mixture of COD and carbapatite (25.1%). CONCLUSIONS: Our findings indicate that the composition of kidney stone fragments recovered after ESWL can be determined. Knowledge of stone composition is fundamental to understand the etiology of lithogenesis.
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