Related Experiment Video
Updated: Jan 14, 2026
Endoscopic Cholesteatoma Surgery
Published on: January 19, 2022
Comparison of microscopic and 3D exoscopic canal wall down tympanomastoidectomy for primary middle ear cholesteatoma
Daiki Onodera1, Masato Suzuki1, Aya Katsura1
1Department of Otolaryngology and Head and Neck Surgery, Iwate Medical University School of Medicine, Yahaba, Japan.
Background:
The three-dimensional (3D) exoscope is an emerging alternative to the operating microscope (OM) in otologic surgery.
Aims:
To assess its clinical utility in cholesteatoma surgery.
Methods:
Retrospective review of 36 primary cases (21 OM, 15 exoscope) comparing setup time, surgical duration, audiological outcomes, and recurrence.
Results:
Groups were comparable in background and stage. Setup time was shorter with exoscope (microscope: 20 min, range 18-22, exoscope: 17 min, range 14-20) (p = .002), while other outcomes showed no significant difference.
Conclusions:
The 3D exoscope reduced setup time with equivalent surgical and functional outcomes to OM.
