13. Acoustic tumours, noise induced hearing losses

From greek.doctor
Revision as of 11:39, 24 November 2023 by Nikolas (talk | contribs) (Created page with "{{:Vestibular schwannoma}} For noise-induced hearing loss, see topic 1. Category:ENT (POTE course)")
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
  • Acoustic neuroma = vestibular schwannoma
    • In internal acoustic canal or cerebellopontine angle
    • Benign tumor of Schwann cells
    • Older adults
    • Unilateral – spontaneous
    • Bilateral – NF2
    • Clinical features
      • Early symptoms
        • Unilateral SNHL
        • Tinnitus
        • Dizziness
        • Unsteady gait
      • Late symptoms – compression of cerebellopontine angle
        • Trigeminal nerve – paraesthesia or facial pain
        • Facial nerve – facial palsy
        • Cerebellum – ataxia
        • 4th ventricle – hydrocephalus
    • Diagnosis
      • Pure tone audiometry – SNHL of higher frequencies
      • Brainstem-evoked audiometry
      • Contrast MRI
    • Treatment
      • Surgery or radiation – if large or significant symptoms
      • Observation



For noise-induced hearing loss, see topic 1.