Clin Endosc.  2023 Mar;56(2):256-257. 10.5946/ce.2022.089.

Side-viewing scope insertion using a large-diameter overtube designed for colonoscopy in a patient with a cascade stomach

• Saito H
• Kadowaki Y
• Fujimoto A
• Ohmoto K
• Tada S

• KMID: 2540745
• DOI: http://doi.org/10.5946/ce.2022.089

Figure

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  Fig. 1. Side-viewing scope insertion into the duodenum during endoscopic retrograde cholangiopancreatography was difficult given the patient’s cascade stomach, which deflected the scope.

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  Fig. 2. A large-diameter overtube (ST-CB1; Olympus, Tokyo, Japan), which was designed for colonoscopy, had a length of 770 mm and outer and inner diameters of 16.2 mm and 13.8 mm, respectively.

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  Fig. 3. (A) The overtube reduced the deflection of the scope in the cascade stomach, allowing the side-viewing scope to be easily inserted into the duodenum. (B) After the scope reached the duodenum, the side-viewing scope was carefully straightened.

Reference

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