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Clin Case Rep
Clin Case Rep
10.1002/(ISSN)2050-0904
CCR3
Clinical Case Reports
2050-0904
John Wiley and Sons Inc. Hoboken

10.1002/ccr3.9461
CCR39461
CCR3-2024-06-1748-IV.R1
Gastroenterology/Hepatology
Case Video
Case Video
Usefulness of unwinding the colonoscope shaft loop via the universal cord for colorectal endoscopic resections
Yoshimoto et al.
Yoshimoto Taiji https://orcid.org/0000-0001-5767-9921
1 jyfrk268@yahoo.co.jp

Takihara Hiroshi 2
Yamamoto Ryuichi 3
1 Department of Gastroenterology Musashino Tokushukai Hospital Tokyo Japan
2 Department of Gastroenterology Uji Tokushukai Hospital, Uji Kyoto Japan
3 Department of Gastroenterology Tokyo‐west Tokushukai Hospital Tokyo Japan
* Correspondence
Taiji Yoshimoto, Department of Gastroenterology, Musashino Tokushukai Hospital, 3‐5‐48, Mukodaicho, Nishitokyo‐shi, Tokyo 188‐0013, Japan.
Email: jyfrk268@yahoo.co.jp

20 9 2024
9 2024
12 9 10.1002/ccr3.v12.9 e946117 8 2024
17 6 2024
05 9 2024
© 2024 The Author(s). Clinical Case Reports published by John Wiley & Sons Ltd.
https://creativecommons.org/licenses/by/4.0/ This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Key Clinical Message

The colonoscope shaft loop can be unwound by establishing a loop in the universal cord of the colonoscope to maintain the same endoscopic view during colorectal endoscopic resections.

endoscopic colorectal resections
endoscopic mucosal resection
endoscopic submucosal dissection
polypectomy
source-schema-version-number2.0
cover-dateSeptember 2024
details-of-publishers-convertorConverter:WILEY_ML3GV2_TO_JATSPMC version:6.4.8 mode:remove_FC converted:20.09.2024
Yoshimoto T , Takihara H , Yamamoto R . Usefulness of unwinding the colonoscope shaft loop via the universal cord for colorectal endoscopic resections. Clin Case Rep. 2024;12 :e9461. doi:10.1002/ccr3.9461
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pmc1 INTRODUCTION

Endoscopists must rotate the endoscope to bring the lesion closer to the forceps hole (typically in a 5–6 o'clock direction) while performing endoscopic colorectal resections. 1 , 2 During this process, a loop is sometimes created in the colonoscope shaft and the endoscopist's hands frequently need to maintain the loop to keep the same endoscopic view, making free hand movement difficult.

Unwinding the colonoscope shaft loop via the universal cord can be used for colorectal endoscopic treatment, such as colorectal endoscopic resections, because it frees the endoscopist's hands while maintaining the same endoscopic view during colorectal endoscopic resections (Figure 1, Video 1).

FIGURE 1 Colonic polypectomy case depicting the unwinding usage of the colonoscope shaft loop via the universal cord. Polyp of macroscopic type 0–Is, 5 mm in size, and located in the proximal ascending colon; arrow indicates the polyp. (A) Endoscope must be rotated counterclockwise to bring the polyp to the 5 o'clock direction, restricting the endoscopist's hand movement. (B) After unwinding the colonoscope shaft loop via the universal cord, the polyp remains in the 5 o'clock direction; however, the endoscope returns to a neutral position, enabling free hand movement.

VIDEO 1 Colonic polypectomy case using the unwinding of the colonoscope shaft loop via the universal cord.

AUTHOR CONTRIBUTIONS

Taiji Yoshimoto: Conceptualization; resources; supervision; writing – original draft; writing – review and editing. Hiroshi Takihara: Conceptualization; supervision; writing – review and editing. Ryuichi Yamamoto: Conceptualization; resources.

FUNDING INFORMATION

No funding was received.

CONFLICT OF INTEREST STATEMENT

The authors have no conflicts of interest to declare.

CONSENT

Written informed consent was obtained from the patient to publish this report in accordance with the journal's patient consent policy.

ACKNOWLEDGMENTS

We thank the Japan Endoscopy Team for their great support.

DATA AVAILABILITY STATEMENT

The data that support the findings of this study are available from the corresponding author upon reasonable request.
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REFERENCES

1 Yoshimoto T , Takihara H , Yoshihara T , et al. Usefulness of “Nelaton attachment” for endoscopic submucosal dissection of colorectal neoplasms. Endosc Int Open. 2019;7 (9 ):E1187‐E1191.31475238
2 Hsu CW , Wu CC , Lee MH , Wang JH , Chen YH , Chang MC . Endoscope rotating technique is useful for difficult colorectal endoscopic submucosal dissection. Surg Endosc. 2020;34 (2 ):1006‐1011.31482351
