Isolated sensorineural hearing loss due to enlargement of pontine neuroglial cyst [Pontin nöroglial kistin genişlemesine bağlı İzole sensörinöral İşitme kaybı]

Isolated sensorineural hearing loss due to posterior fossa benign cystic lesions is extremely rare. although they are benign in the natural course,rarely they may cause progressive neurological symptoms. radiologic and audiometric examinations are useful methods for initial diagnosis and follow-up evaluations. a 48 year old man suffered from left-sided progressive hearing loss for six months. cranial magnetic resonance imaging showed that intrapontine cystic mass measuring 9 mm,enlarged 3 mm during the seven years period. in addition,auditory brainstem response revealed that prolonged 1-5 interpeak latency on the right side and wave 5th was absent on the left. in this report,we described a patient,who has progressive unilateral neural sensorineural hearing loss without any neurological symptoms,because of the enlarging intrapontine cystic mass,which compress to the lower auditory pathways. although,isolated sensorineural hearing loss has been reported in intraaxial cystic lesions in consequence of cerebellopontine angle compression,but we do not encountered in the english literature that isolated sensorineural hearing loss due to compression of lower auditory pathways by intrapontine cystic mass. © 2015,ege university press. all rights reserved.