Article Sidebar
Views PDF: 60
The imaging and the role of multislice computed tomography of otosclerosis
Main Article Content
Abstract
SUMMARY
Objective: To describe the imaging characteristics of otosclerosis and to assess the role of multislice computed tomograph
in diagnosis of this disease.
Methods: About 45 patients (31 females, 14 males), clinically diagnosed as otosclerosis or hearing loss with unknown causes, underwent MSCT in Radiology Department between November 2013 and September 2014. All patients were surgically confirmed in ENT Department of Bach Mai Hospital or National ENT Hospital. Assessmentis based on the classification of Veillon and Portmann,
comparing the differences of hearing threshold, bone and ABG between lesion-type groups and comparing with surgery records.
Results: Mixed hearing loss accounts for the highest proportion. Regarding the affected sites on CT, the antefenestrum was affected
in 33 ears, the other sites are rare. The otosclerotic foci that greater than 1mm in diameter and not spreading into the membrane in the cochleaare dominate. According to the classification of Veillon, type Ib and II account for the highest percentage. When comparing the average air or bone conduction threshold and ABG between
differents groups, there are no statistically significant difference. The diagnostic value of CT scan in otosclerosis is up to 91.5% and its
sensitivity and specificity are more than 95%.
Conclusion: MSCT is an useful method in the diagnosis of otosclerosis and in the differential diagnosis with others causes of
hearing loss.
Article Details
Keywords
Otosclerosis, the role of MSCT in diagnosis of otosclerosis
References
1. McKenna M. J. (2001), Pathophysiology of otosclerosis. Otology and Neurotology, 22(2): p. 249-257.
2. SHEA (1998), A personal history of stapedectomy. Americal Journal of Otology, 19: p. 2-12.
3. Lê Công Định (2007), Nghiên cứu chẩn đoán và đánh giá kết quả thay thế xương bàn đạp bằng trụ gốm y sinh trong bệnh xốp xơ tai. p. tr. 1 - 90.
4. Elsherif Abdelaziz M,M Ashrafand Moustafa Abbas HN (2011), Impact of high resolution 16- slice multidetector computed tompgraphy on diagnosis of clinical otosclerosis AAMJ, 9(2).
5. Charretier Carl (2011), Etude clinique de la platinotomie calibrée au LASER CO2-système SurgiTouch TM.
6. Young Je Shin and al Bernard Fraysse et (2001), Sensorineural Hearing Loss and Otosclerosis. Otolaryngol Clin North Am, 121(1): p. 200 - 205.
7. F.Craighero and Driessche V. Van (2011), Valeur de l’hypodensité préméatique interne (HPMI) dans l’otospongiose. Journées Françaises de Radiologie 2011.
8. Marx Mathieu,Sebastien Lagleyre et al. (2011), Correlations between CT scan findings and hearing thresholds in otosclerosis. Acta Oto-laryngologica, 131(4): p. 351-357.
9. Lagleyre Sebastien,Sorrentino Tommaso et al. (2009), Reliability of High-Resolution CT Scan in Diagnosis of Otosclerosis. Otology & Neurotology, 30(8): p. 1152-1159