Abstract
Background
Endoscopic submucosal dissection (ESD) is a technically difficult and time-consuming procedure for the treatment of large colorectal tumors. In Japan, the ball-tip bipolar-current needle-knife (BB-knife) has been used in ESD as a safe device that minimizes the damage to deeper tissues of colorectal neoplasms. In May 2012, a BB-knife combined with a water jet function (Jet B-knife) was newly developed.
Methods
This retrospective study was aimed at examining the effectiveness and safety of the Jet B-knife. The BB-knife was used in 276 lesions (BB-knife group), while the Jet B-knife was used in 245 lesions (Jet B-knife group). We evaluated tumor characteristics and the results of the ESD procedures, including the size of the resected tumor, histological diagnosis, time required for resection, frequency of using other electrical devices, en bloc resection rate, and incidence rate of associated complications. Then, the data obtained were compared between the two groups.
Results
The histological evaluation of the resected tumors revealed that the incidence of cancer was not significantly different between the two groups. The median time required for resection was 103 min (45–255) in the BB-knife group and 51 min (28–210) in the Jet B-knife group. The difference was statistically significant (p < 0.05). Furthermore, the median tumor diameters were 23.1 mm (18–50) and 26.2 mm (20–60) in the BB-knife and Jet B-knife groups, respectively, demonstrating a statistically significant difference (p < 0.05). Multivariate logistic regression analysis revealed that short resection time (p < 0.001) and reduced use of hemostatic devices (p < 0.01) were independent favorable features of Jet B-knife. The en bloc resection rate and the perforation rate were not statistically significant between the two groups.
Conclusions
Use of the Jet B-knife may contribute to the development of a time-saving, cost-effective, and safe procedure for ESD of colorectal tumors.
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Acknowledgements
The authors thank Dr. Yatsugi Noda, Director of Saiseikai Takaoka Hospital, for his support in this study. This research was partially supported by JSPS KAKENHI Grant-in-Aid for Scientific Research (C) Grant Number JP 19K08464 and Japan Agency for Medical Research and development, AMED.under Grant Number JP19fk0310116, JP19fk0210047, and JP19fk0210058.
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All authors, namely Hiramatsu K, Naito T, Akazawa Y, Saito Y, Nosaka T, Takahashi K, Ofuji K, Matsuda H, Ohtani M, Matsuda, Sakai A, and Nakamoto Y, have no conflicts of interest or financial ties to disclose.
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Hiramatsu, K., Naito, T., Akazawa, Y. et al. Bipolar-current needle-knife with a water jet function (Jet B-knife) shortens the procedure time of endoscopic submucosal dissection for colorectal tumors. Surg Endosc 35, 3600–3606 (2021). https://doi.org/10.1007/s00464-020-07832-w
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DOI: https://doi.org/10.1007/s00464-020-07832-w