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Case Reports
. 2008 Jun;72(6):905-9.
doi: 10.1016/j.ijporl.2008.02.003. Epub 2008 Mar 19.

Case report: "auditory neuropathy" in a newborn caused by a cerebellopontine angle arachnoid cyst

A N Boudewyns  1 , F Declau, D De Ridder, P M Parizel, J van den Ende, P H Van de Heyning
Affiliations
Case Reports

Case report: "auditory neuropathy" in a newborn caused by a cerebellopontine angle arachnoid cyst

A N Boudewyns et al. Int J Pediatr Otorhinolaryngol. 2008 Jun.

Abstract

We present a 6-week-old girl, referred because of failed newborn hearing screening in the right ear. Click-evoked oto-acoustic emissions were present in both ears, auditory brainstem responses (ABR) were present in the left but totally absent in the right ear. A magnetic resonance imaging (MRI) study revealed a large arachnoid cyst in the right cerebellopontine angle (CPA) and a diagnosis of "auditory neuropathy/auditory dyssynchrony" was established. A microsurgical resection of the cyst wall and fenestration was performed by a retro sigmoid approach. This is the first case in the literature of auditory neuropathy (AN) in an infant caused by a cerebellopontine angle arachnoid cyst.

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