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Superior semicircular canal dehiscence: A new perspective
Dinesh Sood1, Lokesh Rana1, Raman Chauhan2
1Department of Radiodiagnosis DRPGMC, Tanda, Kangra, H.P., India.
European Journal of Radiology Open
|December 14, 2017
Summary
Superior semicircular canal dehiscence (SSCD) and thinning are acquired conditions, increasingly prevalent with age. Multi-detector computed tomography (MDCT) aids diagnosis, with vertigo being a key symptom.
Area of Science:
- Radiology
- Otolaryngology
- Anatomy
Background:
- Superior semicircular canal dehiscence (SSCD) and thinning are conditions affecting the inner ear.
- Their association with age and other ear pathologies requires further investigation.
Purpose of the Study:
- To evaluate the utility of multi-detector computed tomography (MDCT) in diagnosing SSCD and thinning.
- To explore the relationship between SSCD/thinning, age, and common ear pathologies like CSOM and cholesteatoma.
- To determine if SSCD/thinning are acquired or congenital conditions.
Main Methods:
- Retrospective review of 160 temporal bone CT examinations (80 with SSCD/thinning, 80 controls).
- MDCT scans analyzed for SSCD and thinning using 1 mm axial images with reformatted sagittal and coronal views.
- Patients categorized into age groups to assess prevalence and statistical analysis (Pearson chi-square test) performed.
Main Results:
- 80 cases of SSCD (39) or thinning (41) were identified.
- A significant association was found between SSC pathologies and increasing age (p < 0.001).
- No significant relationship was observed between SSCD/thinning and CSOM or cholesteatoma (p = 0.285). Vertigo was a significant presenting symptom (p < 0.001).
Conclusions:
- SSCD and thinning are part of a spectrum of acquired conditions, not congenital.
- The prevalence of these conditions increases with age.
- Vertigo is a predominant symptom, and there's no significant association with CSOM or cholesteatoma.
Keywords:
CSOM, chronic suppurative otitis mediaCT, computed tomographyCholesteatomaChronic suppurative otitis mediaHRCT, high resolution computed tomographyMDCT, multi-detector computed TomographySCDS, superior semicircular canal dehiscence syndromeSSC, superior semicircular canalSSCD, superior semicircular canal dehiscenceSemicircular canalSemicircular canal dehiscence
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