Table 2: Comparison of the mastoid pneumatization in the healthy and the diseased ears in the group 2.
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