The Journal of International
Advanced Otology
Case Report

Sensorineural Hearing Impairment Recovery after Transmastoidal Surgery for a Petrous Apex Cholesterol Granuloma: A Case Report


Department of Oral and Maxillofacial Surgery, Radboud University Medical Center, Nijmegen, The Netherlands


Dutch Academic Alliance Skull Base Pathology, Radboud University Medical Center, Maastricht University Medical Center+, Nijmegen/Maastricht, The Netherlands

J Int Adv Otol 2022; 18: 447-450
DOI: 10.5152/iao.2022.21349
Read: 465 Downloads: 194 Published: 12 August 2022

Cholesterol granulomas are the most common primary lesions of the petrous apex. Although their benign character, impingement of critical neurovascular structures can cause significant symptomatology such as hearing impairment. We present unique results after treatment of a cholesterol granuloma located in the petrous apex causing sensorineural hearing impairment. A transmastoidal approach was performed using an intraoperative computed tomography-guided navigation system. The video, which is included for reference, illustrates clear drainage of the cyst and drain positioning. The hearing improved completely in the lower frequencies at 500 and 1000 Hz and with a 19 dB improvement in overall bone conduction in the affected ear.

Cite this article as: van Keulen S, Szweryn WJ, Jansen TTG, Bekkers S, Kunst HPM. Sensorineural hearing impairment recovery after transmastoidal surgery for a petrous apex cholesterol granuloma: A case report. J Int Adv Otol. 2022;18(5):447-450.

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