ArticleBMC urology2024
External validation of Ito's nomogram and T.O.HO. scoring system in flexible ureterorenoscopy.
Article in BMC urology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Preoperative CT-Derived Stone Burden Metrics for Predicting Stone-Free Status and Operative Time After Retrograde Intrarenal Surgery.Diagnostics (Basel, Switzerland) · 2026Article
- Machine learning for predicting stone-free rate after retrograde intrarenal surgery: Comparison with the T.O.HO. score.Urolithiasis · 2026Article
- T.O.HO.-PCNL Score for Predicting Success of Percutaneous Nephrolithotripsy: A New Score Development Study.Journal of clinical medicine · 2026Article
- External Validation and Comparative Performance of the T.O.HO. and S.T.O.N.E. Scoring Systems for Predicting Stone-Free Outcomes Following Flexible Ureteroscopy: Toward Personalized Preoperative Counseling.Journal of personalized medicine · 2025Article
- Retrograde intrarenal surgery with intelligent pressure control: experience from a primary hospital in China.BMC urology · 2025Article
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Authors and funding
5 authors.
Funding
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Abstract
purposeThis study aims to assess stone-free rates after flexible ureterorenoscopy (fURS) using the T.O.HO. (Tallness, Occupied lesion, Hounsfield unit evaluation) scoring system and Ito's nomogram. MATERIALS AND
methodsIn the study conducted with 484 patients, the following parameters were analyzed: age, sex, comorbidities, hospitalization, affected side, extracorporeal shock wave lithotripsy (ESWL) history, stone length, stone density, number of stones, location, and presence of hydronephrosis.
resultsMultivariate logistic regression analysis revealed that stone length, stone number, and lower pole stone location were associated with the prediction of stone-free status. The cut-off value for Ito's score was determined to be 13.5 points, with an AUC of 0.792 (sensitivity, 0.609; specificity, 0.821) and a 95% confidence interval of (0.752-0.832) (Fig. 1). The cutoff for the T.O.HO. score was 6.5 points, with an AUC of 0.744 (sensitivity 0.738, specificity 0.602) and a 95% confidence interval of (0.699-0.789).
conclusionIn conclusion, T.O.HO. scoring system and the Ito's nomogram are promising tools to predict stone-free status (SFS) after fURS in preoperative evaluation. In addition, the success of scoring systems in predicting SFS preoperatively appears promising and offers a potentially valuable approach.
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