RESUMO
To evaluate mastoid cavities after canal wall down procedures in terms of achieving a dry mastoid cavity, presence of residual or recurrent disease [Granulations and cholesteatoma]. Quasi-experimental study. The study was done in the ENT Department, CMH Rawalpindi Study was done in fourteen months from Nov 2006 to Jan 2008. Fifty patients undergoing canal wall down mastoidectomy were included. Their mastoid cavities were evaluated for persistence of discharge and recurrence of granulations and cholesteatoma after the surgery. After follow up period of 3 months, 8% patients had mild discharge, 12% had granulation and 2% patients had recurrence of cholesteatoma. Canal wall down mastoidectomies are very effective in controlling the recurrence of cholesteatoma, granulations formation and otorrhoea to a greater extent