Reproducibility and interobserver agreement of the R.E.N.A.L. nephrometry score: focus on imaging features.

Autor: Vilaseca RM; MD, Attending Radiologist, Radiology Department - Abdominal Imaging, Hospital Universitari Vall d'Hebron, Barcelona, Spain., Westphalen AC; MD, PhD, Associate Professor of Radiology, Radiology and Biomedical Engineering, University of California at San Francisco (UCSF), San Francisco, CA, USA., Reis HF; MD, Attending Radiologist, Internal Medicine Department - Imaging Division, Hospital das Clínicas da Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo (FMRP-USP), Ribeirão Preto, SP, Brazil., Zogbi OS; MD, Attending Radiologist, Internal Medicine Department - Imaging Division, Hospital das Clínicas da Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo (FMRP-USP), Ribeirão Preto, SP, Brazil., Silva GE; MD, PhD, Assistant Professor, Department of Pathology, Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo (FMRP-USP), Ribeirão Preto, SP, Brazil., Dos Reis RB; MD, PhD, Assistant Professor, Department of Surgery - Urology Division, Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo (FMRP-USP), Ribeirão Preto, SP, Brazil., Muglia VF; MD, PhD, Associate Professor, Department of Radiology, Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo (FMRP-USP), Ribeirão Preto, SP, Brazil.
Jazyk: angličtina
Zdroj: Radiologia brasileira [Radiol Bras] 2017 Jan-Feb; Vol. 50 (1), pp. 7-12.
DOI: 10.1590/0100-3984.2015.0174
Abstrakt: Objective: To investigate the reproducibility and interobserver agreement for R.E.N.A.L. nephrometry scoring system.
Materials and Methods: Two independent radiologists retrospectively analyzed 46 consecutive patients with renal masses, between 2008 and 2012, using the R.E.N.A.L. nephrometry score (RENAL-NS), which is based on the evaluation of five anatomical features of the tumor, as evaluated with computed tomography or magnetic resonance imaging: R adius, E xophytic/endophytic properties, N earness to the collecting system, A nterior or posterior descriptor, and L ocation relative to the polar line. Tumor complexity was graded as low, intermediate, or high. The interobserver agreement was calculated for the total score and for the score for each parameter. Surgical excision of the tumors was used as the standard of reference.
Results: The interobserver agreement for each of the RENAL-NS parameters, respectively, a hilar location, and the total score was 98%, 80%, 100%, 89%, 85%, 89%, and 93% of patients, corresponding to kappa values of 0.96, 0.65, 1.00, 0.75, 0.72, 0.78, and 0.88, respectively. The Nearness, Radius, and total score showed the best agreement. For the cases that were discordant in terms of the final score, no major implications in surgical planning were observed.
Conclusion: The RENAL-NS is a structured, useful system to assess the anatomical features of renal tumors. It is easily applicable and reproducible, even for less experienced radiologists.
Databáze: MEDLINE
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