<p class="abstract"><strong>Background:</strong> Chronic otitis media (COM) is characterized by ear discharge and hearing loss. There are two types of COM depending on the presence or absence of cholesteatoma. COM with cholesteatoma is termed as COM squamosal type and COM without cholesteatoma is termed COM mucosal type. COM squamosal type is associated with potential complications. If cholesteatoma is detected early, less invasive surgical methods can be used for hearing preservation and make ear safe from recurrent infections. A proper clinical examination can most often diagnose a cholesteatoma but require a high resolution computed tomography (HRCT) scan to assess the extent of the disease and potential complications. But most often the intra operative findings may not correlate with the HRCT findings. The aim of the study was to evaluate the clinical presentation of COM squamosal disease, preoperative HRCT and intra-operative findings and formulate a proper surgical intervention to avoid complications.  </p><p class="abstract"><strong>Methods:</strong> This is a comparative study of the pre-operative HRCT and intra-operative findings in COM squamosal type. In the present study of 35 patients with squamosal disease, the HRCT findings were compared with intra-operative findings.</p><p class="abstract"><strong>Results:</strong> The study showed a good correlation between pre-operative HRCT of temporal bone and intra operative finding. The findings are statistically significant (p&lt;0.001).</p><p class="abstract"><strong>Conclusions:</strong> The study shows a good correlation between pre-operative HRCT temporal bone and intra-operative findings.</p>

<p class="abstract"><strong>Background:</strong> Chronic otitis media (COM) mucosal type is characterised by recurrent ear discharge and hearing loss secondary to tympanic membrane perforation. Type 1 tympanoplasty is the surgical option for its closure. The objective of this study is to record the site and size of tympanic membrane perforation, quantify the hearing loss with pure tone audiogram and to assess the hearing gain achieved following type 1 tympanoplasty with temporalis fascia graft.</p><p class="abstract"><strong>Methods:</strong> This prospective study comprises 120 patients of the age group of 15 to 60 years with COM who attended the otorhinolaryngology department, from June 2015 to May 2018. Site and size of perforation were assessed by the number of quadrants involved. Hearing loss was quantified by pure tone audiometry (PTA) pre-op and 3, 6 and 12 months post-op. The pure tone average with the air-bone gap (ABG) at 12 months is used for the assessment.  </p><p class="abstract"><strong>Results:</strong> In this study, mean pure tone average pre-operatively for small, medium, large and subtotal perforations were 26 dB, 32 dB,35 dB, 42 dB respectively and 14.37 dB, 23 dB, 23.66 dB, and 32.5 dB post operatively after one year. On statistical analysis by ANOVA test, postoperative hearing gain was statistically significant.</p><p class="abstract"><strong>Conclusions:</strong> The study shows that hearing loss was proportional to the size of perforation. Air-bone closure following type 1 tympanoplasty was more for subtotal perforation and for perforations involving both anterior and posterior quadrants.</p><p> </p>