Comparative evaluation of mastoid pneumatization pattern using X-ray mastoid and high-resolution computed tomography temporal bone in unilateral squamosal chronic otitis media
DOI:
https://doi.org/10.18203/issn.2454-5929.ijohns20203197Keywords:
Squamosal disease, Chronic otitis media, Pneumatized, Sclerotic, Diploeic, Schuller’s view, HRCT temporal boneAbstract
Background: Chronic otitis media (COM) affects 0.5-30% of individuals in any community and over 20 million people are estimated to suffer from this condition worldwide. COM often evolves in a continuum. Squamosal disease is more commonly found in poorly pneumatized bones, but whether the sclerosis is relevant to the etiology of the disease or is caused by it, has not been fully resolved. Our study aimed at comparing the mastoid pneumatization patterns obtained using X-ray mastoid and high-resolution computed tomography (HRCT) temporal bone. It was an interventional study.
Methods: Sixty patients of unilateral squamosal COM, aged more than 8 years, underwent X-ray mastoid Schuller’s view and HRCT temporal bone, using Philips extended brilliance 48 slice CT.
Results: Upon analysis, in diseased and healthy ears, the coincidence of X-ray and HRCT findings was 63.33% and 80% respectively.
Conclusions: HRCT temporal bone should be done in all cases of squamosal COM to know the extent of the disease, pneumatization patterns and the presence of anatomical variations.
References
Yoon TH, Paparella MM, Schachern PA, Lindgren BR. Morphometric studies of the continnum of otitis media. Ann Otol Rhinol Laryngol Suppl. 1990;148:23-7.
Paparella MM, Kim CS, Goycoolea MV, Giebink S. Pathogenesis of otitis media. Ann Otol Rhinol Laryngol. 1977; 86(4-1):481-92.
Roy A, Deshmukh PT, Patil C. Pneumatization pattern in squamosal type of chronic otitis media. Indian J Otolaryngol Head Neck Surg. 2015;67(4):375-80.
Tos M. Manual of middle ear surgery. Thieme. 1995;2:50-61.
Schnabl J, Glueckert R. Sheep as a large animal model for middle and inner ear implantable hearing devices: a feasibility study in cadavers. Otol Neurotol. 2012;33(3):481-9.
Michio I, Akihiko I. Computerised assessment of developmental changes in the mastoid air cell system. Int Congr Ser. 2003;1254:487-91.
Ahmet K, Osman KA. Mastoid air cell system. Otoscope. 2004;4:144-54.
Allam AF. Pneumatization of the temporal bone. Ann Otol Rhinol Laryngol. 1969;78:48-64.
Roy A, Deshmukh PT, Patil C. Pneumatization pattern in squamosal type of chronic otitis media. Indian J Otolaryngol Head Neck Surg. 2015;67(4):375-80.
Memon MA, Matiullah S, Ahmed Z, Marfani MS. Frequency of unsafe chronic suppurative otitis media in patients with discharging ear. JLUMHS. 2008;7(2):102-5.
Arora MM, Sharma VL, Mehra YN. Mastoid pneumatization in chronic suppurative otitis media and its clinical significance. J Laryngol Otol. 1978;92(5):395-8.
Datta G, Baisakhiya N, Mendiratta V. Unsafe CSOM still a challenge in rural areas. Otolaryngol Online J. 2014;4(2):1-16.
Ueda T, Eguchi S. Distribution of pneumatization of the temporal bone in chronic otitis media seen during the age of antibiotic therapy. J Otol Rhinol Laryngol. 1961;64:1539-42.
Gomma MA, Karim ARAA, Ghany HSA, Elhiny AA, Saadek AA. Evaluation of temporal bone cholesteatoma and the correlation between high resolution computed tomography and surgical finding. Clin Med Insights. 2013;6:21-8.
Iqbal IZ, Watson C. A study of cholesteatoma and mastoid pneumatization. Otolaryngol Head Neck Surg. 2012;147(2):79.
Silva DMNL, Muller JS, Selaimen FA, Oliveira DS, Rosito SLP, Costa SSD. Tomographic evaluation of the contralateral ear in patients with severe chronic otitis media. Braz J Otorhinolaryngol. 2013;79(4):475-9.
Sethi A, Singh I, Agarwal AK, Sareen D. Pneumatization of mastoid air cells: role of acquired factors. Int J Morphol. 2006;24(1):35-8.
Sunitha M, Asokan L, Sambandan AP. A comparative study of plain X-ray mastoids with HRCT temporal bone in patients with chronic suppurative otitis media. J Evolution Med Dent Sci. 2015;4(30):5190-7.
Virapongse C, Sarwar M, Bhimani S, Sasaki C, Shapiro R. Computed tomography of temporal bone pneumatization. AJR Am J Roentgenol. 1985;145(3):473-81.