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Updated: Jun 10, 2026

Using the Endoscope for Endobronchial Ultrasound in the Esophagus
Published on: November 21, 2023
Experience with the new 4-way, 5.5-mm ultrathin endoscope: a case series
Deepak Agrawal1, Richard C K Wong, Gerard Isenberg
1University Texas Southwestern Medical Center, 5959 Harry Hines Blvd, POB 1, 520P, Dallas, TX 75390, USA. deepak_ag@yahoo.com
Background And Study Aims:
Use of ultrathin (ut) endoscopes is sometimes limited by their design (outer diameter, tip angulation and image quality). New ut-endoscopes are being designed to address these limitations. A new ut-endoscope, XGIF-PV70N5 (Olympus America Inc.), with an outer diameter of 5.5 mm, 4-way angulation and narrow band imaging has recently been introduced. In this study, we report our subjective experience with this prototype ut-endoscope and discuss the practical uses of its new features.
Patients And Methods:
In this prospective case series, ut-endoscopy was performed on selected patients scheduled for endoscopy at a tertiary referral center.
Results:
Ut-endoscopy was successfully performed on 15 patients with varied indications. The 4-way angulation proved advantageous but not necessary. Narrow band imaging was not very useful in this group of patients. The image quality was satisfactory.
Conclusions:
The prototype ut-endoscope can be used for a broad range of indications. The 4-way angulation may prove advantageous in specific situations and the role of narrow-band imaging remains to be defined.
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