Conclusion: Combining canal wall up mastoidectomy with Type I tympanoplasty can treat otitis media safely and effectively due to high postoperative dry ear canal rate, satisfactory reconstruction of hearing and maintenance of ear morphology.
KEY WORDS: Canal wall up mastoidectomy, Hearing reconstruction, Otitis media, Tympanoplasty.
After rational selection of indications, 78 patients (81 ears) with otitis media were treated by canal wall up mastoidectomy in combination with Type I tympanoplasty.
They were then followed up to analyze the overall treatment outcomes Our objective was to evaluate the therapeutic effects in terms of disease clearance and hearing improvement of canal wall up mastoidectomy in combination with Type I tympanoplasty in otitis media.
Some authors prefer canal wall up mastoidectomy
as hearing threshold are worse after canal wall down mastoidectomy.
Furthermore, we exposed the stylomastoid foramen by removing the mastoid tip and a part of the tympanic bone with canal wall up mastoidectomy. The fistula with cysts was located in the anteroinferior region of the external auditory canal.
To our knowledge, this is the first report to apply the approach to identify the FN in the stylomastoid foramen with canal wall up mastoidectomy to remove the recurrent FBCA, and this might facilitate the complete dissection of the scar and lesion around the main trunk of the FN in the parotid gland.
Canal wall down mastoidectomy has better disease clearance than canal wall up mastoidectomy
CONCLUSION: Single-stage CWDM with reconstruction of the posterior canal wall, ossicular chain, and tympanic membrane is a safe and reliable technique with the advantages of Canal wall up Mastoidectomy (CWUM).
Canal wall up Mastoidectomy (CWUM) preserves the normal anatomy and reduces the healing time; on the other hand, it has high residual or recurrence rates (26-45%) due to the limited surgical view.
The label "Mastoidectomy with removal of the bony canal" was used instead of "Canal wall down mastoidectomy"; "Mastoidectomy with canal wall preserved" was used instead of "Canal wall up mastoidectomy
(5) reported that canal wall down and canal wall up mastoidectomy
techniques were not superior to each other with respect to hearing outcomes, whereas Tos and Lau (6) determined that hearing outcomes were superior with the canal wall down technique.