ACCURACY OF ULTRASONOGRAPHY COMPARED TO UNENHANCED HELICAL COMPUTERIZED TOMOGRAPHY IN SCREENING OF SMALL KIDNEY STONES IN A COMMUNITY
Keywords:
hyperechoic foci, small kidney stone, unenhanced helical computed tomography, microhematuria, micropyuriaAbstract
OBJECTIVE: To determine the sensitivity and specificity of ultrasonography for screening of small kidney stone by comparison with unenhanced helical computerized helical tomography (UHCT). Our community in the North-Easthern part of Thailand have a prevalence of kidney stone which is the main public health problem. Our ultrasonography (US) survey found a prevalence of hyperechoic (H YF) with or without acoustic shadowing mimicing with small kidney stones (KS). Since small stone is relatively easy to manage but difficult to be diagnosed. It will be most beneficial to study this project in order to be able to manage the kidney stones in the epidermic area since the stones are still small and easier to be managed.
METHOD: Participants were 164 subjects (328 kidneys) randomly sampled from our community survey, with and without HYF in 118 and 210 kidneys, respectively. Within 48 hours, the subjects were transferred to the university hospital for UHCT by the radiologists.
RESULT: By comparison with UHCT, the sensitivity and specificity of US in screening for KS was 81.1% and 72.7%. The respective sensitivity and specificity of microhematuria and micropyuria were 53.7% and 57.9%, and 36.6% and 52.9%.
CONCLUSION: The screening of small kidney stones by US in community had moderate sensitivity and specificity.
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