| Revista: | International braz j urol |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000434706 |
| ISSN: | 1677-5538 |
| Autors: | Danilovic, Alexandre1 Rocha, Bruno Aragão1 Marchini, Giovanni Scala1 Traxer, Olivier2 Batagello, Carlos1 Vicentini, Fabio Carvalho1 Torricelli, Fábio César Miranda1 Srougi, Miguel1 Nahas, William Carlos1 Mazzucchi, Eduardo1 |
| Institucions: | 1Universidade de Sao Paulo, Faculdade de Medicina, Sao Paulo. Brasil 2Sorbonne Universites, Hopital Tenon, París. Francia |
| Any: | 2019 |
| Període: | Sep-Dic |
| Volum: | 45 |
| Número: | 5 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Aplicado, descriptivo |
| Resumen en inglés | Objectives Measurements of stone features may vary according to the non-contrast computed tomography (NCCT) technique. Using magnified bone window is the most accurate method to measure urinary stones. Possible differences between stone measurements in different NCCT windows have not been evaluated in stones located in the kidney. The aim of this study is to compare measurements of kidney stone features between NCCT bone and soft tissue windows in patients submitted to retrograde intrarenal surgery (RIRS). Materials and Methods Preoperative and 90th postoperative day NCCT were performed in 92 consecutive symptomatic adult patients (115 renal units) with kidney stones between 5 mm to 20 mm (< 15 mm in the lower calyx) treated by RIRS. NCCT were evaluated in the magnified bone window and soft tissue window in three axes in a different time by a single radiologist blinded for the measurements of the NCCT other method. Results Stone largest size (7.92±3.81 vs. 9.13±4.08; mm), volume (435.5±472.7 vs. 683.1±665.0; mm3) and density (989.4±330.2 vs. 893.0±324.6; HU) differed between bone and soft-tissue windows, respectively (p<0.0001) 5.2% of the renal units (6/115) were reclassified from residual fragments > 2 mm on soft tissue window to 0-2 mm on bone window. Conclusion Kidney stone measurements vary according to NCCT window. Measurements in soft tissue window NCCT of stone diameter and volume are larger and stone density is lesser than in bone window. These differences may have impact on clinical decisions |
| Disciplines | Medicina |
| Paraules clau: | Nefrología, Diagnóstico, Cálculos renales, Tomografía computarizada, Nefrolitiasis |
| Keyword: | Nephrology, Diagnosis, Kidney stones, Computerized tomography, Nephrolithiasis |
| Text complet: | Texto completo (Ver HTML) Texto completo (Ver PDF) |
