“…The acoustic neuroma is considered a definitive cause of sudden hearing loss. The most frequent accompanying symptoms are tinnitus in 70% to 90% of the cases and dizziness in 20% to 40% of the cases 4,5 . For the sudden hearing loss diagnosis, besides the detailed anamneses and physical exam, a complete audiometric evaluation is paramount, brainstem evoked-response audiometry (BERA), vestibular tests and trigeminal nerve assessment, as well as MRI with gadolinium and other tests in the pursue of the etiology 5,6 .…”