Table 2 Shin et al. classification of EACC [36]
Stage | CT findings | Treatment |
|---|---|---|
Stage I | Limited to the EAC | Local care or canaloplasty |
Stage II | Extension into the middle ear | Canaloplasty + tympanoplasty |
Stage III | Extension into the mastoid air cell system | Canaloplasty + mastoidectomy ± tympanoplasty ± reconstruction of the EAC wall |
Stage IV | Extension beyond the temporal bone | Removal of cholesteatoma via various approaches |