Related Experiment Video
Updated: May 31, 2026
Using the Endoscope for Endobronchial Ultrasound in the Esophagus
Published on: November 21, 2023
Virtual bronchoscopic navigation combined with endobronchial ultrasound to diagnose small peripheral pulmonary
Takashi Ishida1, Fumihiro Asano, Koichi Yamazaki
1Department of Pulmonary Medicine, Gifu Prefectural General Medical Center, 4-6-1 Noishiki, Gifu 500-8717, Japan.
Background:
Bronchoscopy using endobronchial ultrasound (EBUS) can help to diagnose small peripheral pulmonary lesions. However, although biopsy sites can be confirmed, a bronchoscope cannot be guided in EBUS. Virtual bronchoscopic navigation (VBN) can guide a bronchoscope with virtual images, but its value has not been confirmed.
Methods:
This prospective multicentre study examines the value of VBN-assisted EBUS for diagnosing small peripheral pulmonary lesions. 199 patients with small peripheral pulmonary lesions (diameter ≤30 mm) were randomly assigned to VBN-assisted (VBNA) or non-VBN-assisted (NVBNA) groups. A bronchoscope was introduced into the target bronchus of the VBNA group using the VBN system. Sites of specimen sampling were verified using EBUS with a guide sheath under fluoroscopy.
Results:
The diagnostic yield was higher for the VBNA than for the NVBNA group (80.4% vs 67.0%; p = 0.032). The duration of the examination and time elapsed until the start of sample collection were reduced in the VBNA compared with the NVBNA group (median (range), 24.0 (8.7-47.0) vs 26.2 (11.6-58.6) min, p = 0.016) and 8.1 (2.8-39.2) vs 9.8 (2.3-42.3) min, p = 0.045, respectively). The only adverse event was mild pneumothorax in a patient from the NVBNA group.
Conclusions:
The diagnostic yield for small peripheral pulmonary lesions is increased when VBN is combined with EBUS. Clinical trial number UMIN000000569.
