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 Sep;18(5):447-450. doi: 10.5152/iao.2022.21349.
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.
胆脂瘤是岩尖最常见的原发性病变。尽管其性质为良性，但压迫关键的神经血管结构可引起明显的症状，如听力障碍。我们报告了一例位于岩尖的胆脂瘤导致感音神经性听力障碍的治疗结果。采用经乳突入路，术中使用计算机断层扫描导航系统辅助。所附视频可供参考，清晰显示了囊肿的充分引流和引流管的位置。受影响耳的低频（500 和 1000 Hz）听力完全改善，总骨导听力提高 19 dB。
