شيوع كلستياتوم در اوتيت مدياي مزمن و مقايسه نتايج بعد از عمل در دو گروه با و بدون كلستياتوم

The Prevalence of Cholesteatoma in Patients with Chronic Otitis Media and the Comparison of Post Operative Results in Patients with and Without Cholesteatoma

Background: Chronic otitis media (COM) is one of the most common otolaryngologic diseases that can involve patients in every age group. The aim of this study was to evaluate the prevalence of cholesteatoma in COM patients and compare the postoperative results in COM patients with and without cholesteatoma. Materials and Methods: This clinical trial was a descriptive cross sectional study that was conducted on 80 patients with COM in otolaryngology ward of Yazd Shahid Rahnemoon Hospital who underwent surgical operation and post surgical results investigated in 6-24 months follow up period. Results: Cholesteatoma prevalence was 22.5% that higher in men (26.4%) compared to women (14.8%) and was more common in the first two decades of life. Graft insertion success rate was 85.5% in patients without cholesteatoma and in all of patients with cholesteatoma. The average improvement of hearing threshold in patients without cholesteatoma was + 7.9 dB and in cases with cholesteatoma -1.1 dB. Post operative air-bone gap in patients with cholesteatoma increased 6.4dB and in cases without cholesteatoma decreased 5.3 dB . Conclusion: Results of this study showed, if before occurance of cholesteatoma, surgical treatment for COM was done, better post surgical hearing status will expect.