CT findings of EACC
| Finding | Number |
|---|---|
| Soft tissue mass | 13 |
| Bone erosions | 13 |
| Position of erosion* | |
| Inferior | 8 |
| Posterior | 8 |
| Anterior | 5 |
| Superior | 2 |
| Circumferential | 2 |
| Associated findings | |
| Bony fragments | 7 |
| Middle ear extension | 5 |
| VIIn canal involvement | 2 |
| Tegmen dehiscence | 1 |
| Mastoid involvement | 4 |
* May involve more than one wall of the EAC.