THE DIAGNOSTIC AND ETIOLOGICAL CONTRIBUTION OF SECTIONAL IMAGING IN DEAFNESS (ABOUT 80 CASES)

Introduction: Deafness is defined as hearing impairments that can occur at any age and be of genetic or idiopathic origin. They both abruptly gradually. The aim this work to underline the diagnostic above all etiological contribution spiral CT MRI during deafness, which makes it possible orient therapeutic conduct. Materials methods: We conducted a prospective on patients explored in radiology department August 20 Hospital Casablanca for deafness apart from chronic otitis media post-traumatic between March 2012 December 2013. 43 were by computed tomography (CT) rocks with multiplanar reconstructions (16 strips) 37 magnetic resonance imaging (MRI) 1.5 Tesla. Results: There 80 an average 42 years. was female predominance (55 women 25 men). Hearing loss bilateral (75%), usually symmetrical 3 times greater than unilateral involvement (25%). This sudden 30 (37.5%) progressive installation 50 (62.5%). Conductive found 22 cases (27.5%), sensorineural (27.5%) mixed 36 (45%). diagnoses follows: 18 otosclerosis (22.5%), 7 CSL agenesis (8.75%), 10 cerebellopontine angle tumor (12.5%), 12 paraganglioma jugulo - tympanic (15%), vasculo-nervous crossing (8.75%) 26 turned out normal (32.5%). Conclusion: determination causes has greatly benefited development medical imaging. benefit and/or surgical treatment essentially depending their mechanism, severity results based CT-MRI pair.