Post written by Satoki Shichijo, MD, PhD, from the Department of Gastrointestinal Oncology, Osaka International Cancer Institute, Osaka, Japan.

A polyp at the upper aspect of the duodenal bulb was identified by follow-up endoscopy after Helicobacter pylori eradication. The oral side of the tumor was adjacent to the pylorus, but the anal margin could not be identified because of scope maneuverability, as the tumor was located at the upper aspect of the duodenal bulb.

We prepared a newly developed thin endoscope (EG-840TP; Fujifilm, Tokyo, Japan) at 7.9 mm wide with a large working channel of 3.2 mm and wide angles (up 210° and down 160° each). Using the scope, we obtained en bloc resection.

We felt that it was important to feature this video to show the actual maneuver of the new endoscope. With its small width and wide angles, this endoscope is especially useful for endoscopic submucosal dissection with a stricture or a narrow space such as a bulb or pharynx.

Thank you for reading.

A duodenal polyp at the upper side of the bulb.

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