Abstract
Objectives: To detect the value of otoendoscopy in assessment of patency of aditus ad antrum and to correlate the endoscopic findings with the pre-operative high resolution CT imaging.
Methods This study was conducted on 30 patients suffering from inactive tubo-tympanic chronic suppurative otitis media (CSOM). High resolution computed topography (HRCT) scanning was done preoperatively for all patients for assessment of the tympanomastoid pneumatization and condition of aditus. The patients were divided into 2 groups according to conditions of aditus ad antrum in HRCT scan: Group A includes 15 Patients with patent aditus ad antrum; Group B includes 15 patients with closed aditus ad antrum. All patients underwent cortical mastoidectomy operation with or without myringoplasty and Video Recording by a 30-degree rigid telescope for assessment of the patency of aditus ad antrum.
Results: The study included 30 patients, 14 males and 16 females with mean age of 27.5 years. According to preoperative HRCT, aditus ad antrum is blocked in 15 cases (50%) and opened in 15 cases (50%). These results confirmed intraoperative by Otoendoscope with accuracy 100%.
Conclusion: otoendoscope can be used for evaluation of the extent of middle ear disease, integrity of ossicular chain and explore the hidden sites of the middle ear. This study showed that CT scan temporal bone is 100% accurate in evaluation of the patency of aditus ad antrum and this is assured by intra-operative rigid endoscopic examination. |
