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Cap-assisted endoscopic mucosal resection as a salvage technique for challenging colorectal laterally spreading tumors

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Abstract

Background

Cap-assisted endoscopic mucosal resection (EMR-c) has emerged as a potential alternative to standard piecemeal wide-field EMR (WF-EMR) for the resection of laterally spreading tumors (LSTs). However, clear indications for this technique are still lacking. Our objective was to investigate the performance of salvage EMR-c after WF-EMR failure in the resection of large colorectal LSTs.

Methods

The data of consecutive patients undergoing WF-EMR for large colorectal LSTs (2015–2021) were analyzed in this single-center, retrospective, observational study. In the event of a WF-EMR failure, the procedure was switched to EMR-c in the same session. The efficacy of the two techniques was evaluated in terms of complete endoscopic resection, R0 resection, and recurrence rate. Safety was also assessed.

Results

Overall, the data from 81 WF-EMRs were collected. Eighteen cases of WF-EMR failure were switched to EMR-c in the same session and complete endoscopic resection was achieved in 17/18 patients (94.4%). No statistically significant difference was observed between WF-EMR and salvage EMR-c in terms of macroscopic radicality (P = 0.40) and R0 resection (P = 0.12). However, recurrence was more common with EMR-c (44.4% vs. 23.5%; P = 0.05), as were adverse events, particularly intraprocedural bleeding (27.8% vs. 7.9%; P = 0.04).

Conclusion

EMR-c is an effective salvage technique for challenging colorectal LSTs following WF-EMR failure. Due to the elevated risk of adverse events associated with this procedure, careful patient selection, endoscopic expertise, and close follow-up are strongly recommended.

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Correspondence to Elettra Merola.

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Andrea Michielan, Federica Crispino, Nicolò de Pretis, Chiara Sartori, Nicola Libertà Decarli, Giovanni de Pretis, and Elettra Merola have no conflicts of interest or financial ties to disclose.

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Michielan, A., Crispino, F., de Pretis, N. et al. Cap-assisted endoscopic mucosal resection as a salvage technique for challenging colorectal laterally spreading tumors. Surg Endosc 37, 7859–7866 (2023). https://doi.org/10.1007/s00464-023-10347-9

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  • DOI: https://doi.org/10.1007/s00464-023-10347-9

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