Group 2 | Mastoid cells | Mastoid cells | Mastoid cells | Petrous apex | Petrous apex | Perilabyrinthine cells | Perilabyrinthine cells |
Fully-pneumatized | Diploic | Sclerotic | Pneumatized | Non- Pneumatized | Pneumatized | Non- Pneumatized | |
Healthy-side (n=50) | 48% | 42% | 10% | 42% | 58% | 38% | 62% |
Diseased-side (n=50) | 24% | 30% | 46% | 20% | 80% | 18% | 82% |
p-value | <0.001 | <0.001 | <0.001 | 0.017 | 0.017 | 0.026 | 0.026 |
Group 2: COM with cholesteatoma/retraction pocket | Group 2: COM with cholesteatoma/retraction pocket | Group 2: COM with cholesteatoma/retraction pocket | Group 2: COM with cholesteatoma/retraction pocket | Group 2: COM with cholesteatoma/retraction pocket | Group 2: COM with cholesteatoma/retraction pocket | Group 2: COM with cholesteatoma/retraction pocket | Group 2: COM with cholesteatoma/retraction pocket |