The diagnose of lesions of the ossicular chain in chronic otitis media with CT of the temporal bone

ABSTRACT

Background: The diagnosis of lesions of ossicular chain plays a vital role in ear surgery, especially surgery for hearing rehabilitation.Objective: The purpose of this study was to assess the value of the virtual CT of the temporal bone in the diagnosis of lesions of the ossicular chain. Subject and Method: A prospective study was carried out in the National ETN Hospital. 117 patients between 15 and 54 years of age with suspected ossicular chain lesions underwent CT of the temporal bone before surgery. Result: Using CT of the temporal bone identified 90 patients (76.92%) with ossicular chain lesions, 27 patients (23.08%) without ossicular chain lesions. The positive diagnosed value of CT of the temporal bone was rather high with p=0.87. The negative diagnosed value of CT was p=0.76.The rate of false diagnosis was 0.24. Conclusion: CT of the temporal bone proved to be effective for diagnosing ossicular erosion. This study demonstrates the value of virtual CT of the temporal bone in the diagnosis of the ossicular chain with p-value = 0.84.