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Rare cause of trigeminal neuralgia associated with an arachnoid cyst in petrous apex: Case report
J Korean Skull Base Soc 2020;15(2):141-146
Published online October 31, 2020
© 2020 Korean Skull Base Society.

Ji-Eyon Kwon1, Nurani Rahma Arafah2, Sung-Woo Cho3, Kihwan Hwang1

1Department of Neurosurgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seoul, Korea
2Faculty of Medicine Universitas Indonesia, Jakarta, Indonesia
3Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seoul, Korea
Correspondence to: Kihwan Hwang
주소 : Department of Neurosurgery, Seoul National University Bundang Hospital, 82 Gumi-ro 173beon-gil, Bundang-gu, Seongnam 13620, Korea
Tel : +82-31-787-7169
Fax : +82-31-787-4097
E-mail : ns.kihwan@gmail.com
Received August 22, 2020; Accepted October 2, 2020.
Abstract
Vascular compression is the most common cause of classic trigeminal neuralgia. However, other causes should be excluded. We describe a rare case of a patient presenting with typical trigeminal neuralgia associated with an arachnoid cyst in the petrous apex. A 22-year-old female patient with right trigeminal neuralgia for several years was treated with carbamazepine, which relieved the pain temporarily but was completely ineffective for the 3 months prior to presentation. Thin-slice computed tomography and magnetic resonance imaging showed a cephalocele in the petrous apex. Eventually, surgical aspiration of the cyst was performed using an endoscopic endonasal approach, which resulted in complete resolution of her pain. Petrous apex cephalocele should be considered in the differential diagnosis of trigeminal neuralgia, as it can be easily resolved by surgical aspiration.
Keywords : Trigeminal neuralgia, Endoscopy endonasal surgery, Arachnoid cysts, Petrous apex, Cephalocele


October 2020, 15 (2)
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