Año 2018 / Volumen 110 / Número 11
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Año 2018 / Volumen 110 / Número 11

Original

Switching from endoscopic submucosal dissection to salvage piecemeal knife-assisted snare resection to remove a lesion: a preoperative risk score from the beginning

699-705

José C. Marín-Gabriel, David Lora Pablos, José Díaz-Tasende, Pilar Cancelas-Navia, Sarbelio Rodríguez Muñoz, Andrés J. del Pozo-García, Marina Alonso-Riaño, Yolanda Rodríguez-Gil, Carolina Ibarrola-Andrés, Gregorio Castellano Tortajada,

Background and aims: endoscopic submucosal dissection (ESD) in the Western setting remains a challenge. Therefore, other simplified techniques such as knife-assisted snare resection (KAR) have been reported to overcome this issue. Methods: patients who underwent an ESD for the treatment of gastrointestinal neoplasms were included in a retrospective cross-sectional observational study. Factors associated with the end of ESD as a salvage p-KAR were identified and a logistic regression model was developed. Results: a total of 136 lesions in 133 patients were analyzed. Operator experience of under 50 cases and the combination of lesion size > 30 mm and colorectal location were independent predictive factors for switching to a salvage p-KAR according to the multivariate logistic regression analysis. We developed a risk scoring system based on these four variables (experience, size, location and the combination of size and location) with a receiver operating characteristic curve of 0.81 (95% CI: 0.74-0.89). The diagnostic accuracy of the score for a cut-off point ≥ 5 had a sensitivity of 0.79 (95% CI: 0.66-0.93) and a specificity of 0.71 (95% CI: 0.61-0.80). Conclusion: a simple predictive score system that includes four preoperative factors accurately predicts ESD to finish as a p-KAR. A careful selection of cases considering these variables could be useful to achieve better outcomes in the Western setting.

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The Spanish Journal of Gastroenterology is the official organ of the Sociedad Española de Patología Digestiva, the Sociedad Española de Endoscopia Digestiva and the Asociación Española de Ecografía Digestiva
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