Özet:

Objective: To compare intraoperative condition of the mastoid with preoperative otomicroscopic examination, CT findings and ear discharge history of the patient. Material andMethods: Patients who had undergone tympanoplasty with mastoidectomy for non-cholesteatomatous chronic suppurative otitis media (NCSOM) and who had undergone temporal computed tomography (CT) before the operations were included in this study. Patients were evaluated retrospectively form their medical records.We were able to obtain detailed history, otoscopic findings and temporal CT findings in 51 patients. The history of ear discharge, middle ear mucosal condition in otoscopic examination and preoperative temporal bone CT scan findings were noted. Intraoperative view of mastoid condition is evaluated with mastoid ventilation and pathologic tissue in mastoid cellules. The relationship between intraoperative view of mastoid condition and history of ear discharge and otoscopic findings of middle ear and radiological findings were evaluated. Results: Among a total of 51, 25 (49%) patients had granulation tissue, sclerotic tissue or hyperplastic epithelium in mastoid antrum or/and epitympanum. There was no statistically significant relationship between intraoperative view of mastoid condition and ear discharge and otoscopic findings of middle ear (p>0.05). In addition, mastoid aeration was not related with ear discharge and otoscopic findings of middle ear (p>0.05). There was statistically significant relationship between preoperative CT scan and intraoperative findings of mastoid cellules and mastoid aeration(p<0.01). Conclusion: Assessment of mastoid condition is important before tympanoplasty in NCSOM. Our study demonstrated that NCSOM had higher rate of impaired mastoid condition; and history of ear discharge and otoscopic findings of middle ear did not give a reliable information about the mastoid condition. Preoperative CT scan should be routinely included for the patients with NCSOM in order to predict mastoid condition.

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