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| N = 81, M/F: 35/46, Age: 2–83 (Avg. 52.3) | ||
|---|---|---|
| Tympanoplasty and MAC regeneration group (Poor development of mastoid air cells) | n = 76 | |
 |
Simple chronic otitis media | n = 24 |
| Adhesive otitis media (AOM) | n = 6 | |
| Cholesteatoma (including cholesteatoma with AOM) | n = 46 | |
| Control group (Good development of mastoid air cells) | n = 5 | |
 |
Facial nerve palsy (Facial nerve decompression) | n = 2 |
| Profound hearing loss (Cochlear implantation) | n = 3 | |
