| CSF | cerebrospinal fluid space |
| CT | computed tomography |
| DWI | diffusion weighted imaging |
| EAC | external auditory canal |
| EACC | external ear canal cholesteatoma |
| EPI | echo planar imaging |
| FLAIR | Fluid-attenuated inversion recovery |
| HE | heamatoxylin-eosin |
| HU | Hounsfield units |
| MRI | Magnetic resonance imaging |
| RHS | Ramsay Hunt syndrome |
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