Teenage boy with hoarseness.
Findings: 1. A large left frontal mass is identified with homogeneous contrast enhancement and displacement of the adjacent brain tissue
2. Bilateral internal auditory canal masses
- Differential diagnosis for left frontal mass:
- Dural metastasis
- Differential diagnosis for internal auditory canal/CPA mass:
- Epidermoid cyst
Can you derive a unifying diagnosis? (Revealed on next page).