Validación del artefacto de centelleo en la ecografía renal para el diagnóstico de nefrolitiasis. Hospital Vicente Corral Moscoso, agosto 2020 – agosto 2021

Abstract

Background: Due to today's lifestyle, there is a higher frequency of nephrolithiasis, which is why non-invasive diagnostic methods and without radiation risks are necessary. Objective: to compare renal ultrasound with scintillation artifact and Urotomography without contrast in the diagnosis of nephrolithiasis. Methodology: diagnostic test in 101 patients with symptoms of renal colic, a renal ultrasound and a Urotomography without contrast were performed. Statistical analysis: SPSS version 15, diagnostic precision: sensitivity, specificity, positive predictive value and negative predictive value. Results: 101 patients with symptoms of renal colic, Nephrolithiasis was similar in both sexes, the mean age was 32.2 (± 14.5). The prevalence in ultrasound 54.46%, and in Urotomography 77.23%. By ultrasound 55 patients presented lithiasis, most had 1 stone, in the kidney and left side, > 3 to 7 mm, the scintillation artifact was positive 29.09%. In the Urotomography, lithiasis was presented in 78 patients, with 1 to 2 stones in the majority, > 3 to 7 mm, in the kidney and ureter and bilateral, the density of 102 to 700 HU predominated. Comparing the ultrasound scintillation artifact with Urotomography, we obtained a sensitivity of 48.72%, a specificity of 95.65%, a positive predictive value of 97.44%, and a negative predictive value of 35.48%. Conclusions: the ultrasound scintillation artifact should be considered a confirmatory sign for the diagnosis of kidney stones.