“… 1 Although many AC are asymptomatic, cysts that occur within bony confines, such as the internal auditory canal (IAC) may have increased risk of compressive symptoms. 2 , 3 , 4 Literature investigating AC of the IAC is scarce, but available data have suggested associations with sensorineural hearing loss (SNHL), 1 , 2 , 3 unilateral tinnitus, 5 , 6 vertigo, 7 , 8 or temporary facial palsy 9 , 10 similar to cystic variants of schwannoma. 11 Diagnosis most commonly follows abnormal auditory or vestibular testing 10 and magnetic resonance imaging (MRI) with IAC protocol.…”