vascular loops and hearing loss

Vascular Loops and Unilateral Hearing Loss

Last August, a post in this section described unusual findings in a patient with unilateral sensorineural hearing loss and retrocochlear findings who was referred for MRI to rule out acoustic neuroma. An acoustic neuroma is a benign, small, slow-growing tumor on the VIII cranial nerve–technically called a vestibular schwannoma.   The MRI found no evidence of…

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The Ear is Hooked Up to the Brain

This post is about how the auditory nerve (cranial nerve VIII, officially called vestibulocochlear CNVIII) hooks up our inner ears to our brains and things that go wrong at the point of hook up.  For example, vascular loops inveigle themselves into the hook up intersection, causing traffic jams which interrupt the flow of hearing to the brain.  Shingles is…

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