Year 2019 / Volume 111 / Number 7
Original
Short and long-term outcomes of underwater EMR compared to the traditional procedure in the real clinical practice

543-549

DOI: 10.17235/reed.2019.6009/2018

Joaquín Rodríguez Sánchez, Hugo Uchima Koecklin, Lucía González López, Miriam Cuatrecasas, Eva de la Santa Belda, Pilar Olivencia Palomar, Carlos Sánchez García, Mónica Sánchez Alonso, José Ramón Muñoz Rodríguez, Francisco Javier Gómez Romero, Bartolomé López Viedma, Ana Belén Agarrabeitia, José Olmedo Camacho, Eduardo Albéniz Arbizu,

Abstract
Background and aims: underwater endoscopic mucosal resection (U-EMR) has been recently described as an alternative to endoscopic mucosal resection (EMR) for flat colorectal polyps. However, the real applications remain unclear due to the lack of comparative studies. Methods: a multi-centric prospective study was performed from November 2016 to December 2017. All lesions larger than 15 mm that were resected with both techniques were included in the study. The samples were matched using the size, morphology, site and access (SMSA) score as a reference. The efficacy, efficiency and adverse events rates were compared. Results: a total of 162 resections were collected (112 EMR and 50 U-EMR) with an average size of 25 mm. U-EMR achieved better results for the en bloc resection rate (49 vs 62%; p = 0.08) and there were no cases of an incomplete resection (10.7 vs 0%; p = 0.01). U-EMR was faster than EMR and there were no differences in the adverse events rate. Furthermore, U-EMR tended to achieve better results in terms of recurrence. Performing the resection in emersion appeared to prevent the cautery artefact, especially in sessile serrated adenomas. Conclusion: in the real clinical practice, U-EMR and EMR are equivalent in terms of efficacy and safety. Furthermore, U-EMR may be a feasible approach to prevent cautery artefact, allowing an accurate pathologic assessment.
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Rodríguez Sánchez J, Uchima Koecklin H, González López L, Cuatrecasas M, de la Santa Belda E, Olivencia Palomar P, et all. Short and long-term outcomes of underwater EMR compared to the traditional procedure in the real clinical practice. 6009/2018


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Publication history

Received: 29/10/2018

Accepted: 31/01/2019

Online First: 11/06/2019

Published: 04/07/2019

Article revision time: 87 days

Article Online First time: 225 days

Article editing time: 248 days


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