Related Experiment Video
Updated: Sep 22, 2025
Endoscopic Cholesteatoma Surgery
Published on: January 19, 2022
An endoscopic hydro-mastoidectomy technique for cholesteatoma surgery
S Nishiike1, T Imai2, S Uetsuka1
1Department of Otorhinolaryngology - Head and Neck Surgery, Osaka Rosai Hospital, Sakai, Japan.
Objective:
Endoscopic hydro-mastoidectomy, in which mastoidectomy is performed underwater, can be employed during transcanal endoscopic ear surgery for cholesteatoma removal. It was hypothesised that endoscopic hydro-mastoidectomy might take less time than endoscopic non-underwater mastoidectomy because the endoscope does not need to be removed for cleaning.
Methods:
This study compared the mastoidectomy and total operative durations between the endoscopic hydro-mastoidectomy (n = 25) and endoscopic non-underwater drilling (control, n = 8) groups. Moreover, it compared the size of resected areas of the external auditory canal between the two groups.
Results:
The mastoidectomy time of the endoscopic hydro-mastoidectomy group was significantly shorter than that of the control group (p < 0.01). The total operative time did not differ significantly between the endoscopic hydro-mastoidectomy and control groups (p = 0.17). The resected area was significantly larger in the endoscopic hydro-mastoidectomy group than in the control group (p < 0.05).
Conclusion:
Endoscopic hydro-mastoidectomy enables more extensive bone resection within a shorter period.
