[Long-term results of canal wall down mastoidectomy]
R Castrillon1, I Kos, P Montandon
1Clinique et Policlinique d'oto-rhino-laryngologie et de chirurgie cervico-faciale, Hôpitaux Universitaires de Genève, 24, rue Micheli-du-Crest, CH-1211 Genève 14.
Introduction:
This study evaluates the anatomical and functional long-term results of canal wall down mastoidectomy.
Method:
We analyse the results of 259 primary, one stage canal wall down mastoidectomies with type III, IV or V ossiculoplasty performed between 1974 and 1998. The indication for surgery was chronic active otitis with cholesteatoma or resistant to conservative treatment.
Results:
In the long term, 1-24 (mean 7) years after surgery, 95% of the ears showed a dry, self-cleaning cavity and were disease-free. Hearing was preserved or improved in 70% of cases. Surgical revision due to of residual cholesteatoma was necessary in 16 cases (6%). The number of postoperative outpatient visits necessary to treat multiple minor problems was up to 10 visits per patient during the first 6 months after surgery and then gradually decreased over the years.
Discussion:
The results achieved with canal wall down mastoidectomy are satisfactory in the long term, but the cavities required a high degree of postoperative outpatient care.
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