Table 4.
Radiographic Findings
| Radiographic Category | Finding (% of Modality Total) | (% of Overall Total) |
|---|---|---|
| CT | N = 20 | |
| Cochlear | ||
| Bilateral Dysplasia | 3 (15%) | (8.6%) |
| Bilateral Obstructed | 1 (5%) | (2.8%) |
| Vestibular | ||
| Bilateral EVA | 5 (25%) | (14.3%) |
| Right Dysplastic SCC | 1 (5%) | (2.8%) |
| Left Dysplastic SCC | 1 (5%) | (2.8%) |
| Bilateral Dysplastic SCC | 2 (10%) | (5.6%) |
| Cochlear/Vestibular | ||
| Bilateral Dysplasia + Bilateral Dysplastic SCC** | 1 (5%) | (2.8%) |
| Bilateral Dysplasia + Unilateral EVA | 1 (5%) | (2.8%) |
| Bilateral Dysplasia + Bilateral EVA | 5 (25%) | (14.3%) |
| MRI | N = 15 | |
| Cochlear | ||
| Bilateral Dysplasia** | 2 (13%) | (5.6%) |
| Vestibular | ||
| Bilateral EVA** | 7 (47%) | (20.0%) |
| Unilateral EVA | 1 (7%) | (2.8%) |
| Cochlear/Vestibular | ||
| Bilateral Dysplasia + bilateral EVA | 4 (27%) | (11.4%) |
| Bilateral Dysplasia + bilateral absent SCC | 1 (7%) | (2.8%) |
| Overall Total | 35 | (100%) |
*
3 patients had abnormal findings on both modalities; EVA = Enlarged Vestibular Aqueduct; SCC = Semicircular Canal