Córdova – Chávez NA, Onofre – Castillo JJ, Mancilla – Serrato AA, Santana – Vela IA, Valdés – Martínez FJ, Torres – Gómez E, Cuituny – Romero AK

Language: Spanish
References: 11
Page: 40-44
PDF size: 641.50 Kb.

ABSTRACT

Objective. Compare the density of stones in simple abdominal tomography with crystallography to predict the chemical component.
Material and method. An observational, descriptive, cross-sectional and retrospective study. We studied non-contrast CT abdominal scans, from January 2011 through March 2012, of patients with diagnosis of kidney stones whose samples were subject to crystallography. We evaluated attenuation of stones with a region of interest at their maximum diameter. Then the results obtained in crystallography were correlated with the Hounsfield units of each stone studied by tomography.
Results. Forty-five patients were included. A Pearson correlation test was performed taking the Hounsfield units and the percentage of the primary component of the stone. The average value was taken obtaining an r2 of 0.0035. The results indicate that there is no relationship between the data compared.
Conclusions. Tomography can be used to distinguish between stones of calcium oxalate and uric acid; however, it cannot distinguish other components.

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