• Journal of Korean Neurosurgical Society
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• 제41권1호
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• pp.43-46
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• 2007

Hypoglossal neurilemmoma is extremely rare. Intracranial hypoglossal neurilemmoma has been reported to the present most commonly as a space-occupying lesion with symptoms of raised intracranial pressure. A 68-year-old women presented with deviation of the tongue to the left on protrusion. Preoperative radiological images revealed an extra-axial mass in and around the hypoglossal canal. The tumor was totally resected via retrosigmoid suboccipital approach with burrhole craniectomy. Histopathological examination verified a neurilemmoma. She had no neurologic abnormality except hypoglossal palsy which recovered completely in six months. Retrosigmoid suboccipital approach with burrhole craniectomy can be an useful approach in intracranial hypoglossal neurilemmoma without extracranial extension or with minimal extracranial extension into the hypoglossal canal.

• Anatomy and Cell Biology
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• 제56권1호
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• pp.61-68
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• 2023

Anatomical knowledge of the occipital condyle (OC) and its relationships to surrounding structures is important for avoiding injury during craniovertebral junction (CVJ) surgeries. This study was conducted to evaluate the morphology and morphometry of OC and its relationship to foramen magnum, jugular foramen (JF), and hypoglossal canal (HC). Morphometric parameters including length, width, height, and distances from the OC to surrounding structures were measured. The oval-like condyle was the most common OC shape, representing for 33.0% of all samples. The mean length, width and height of OC were 21.3±2.4, 10.5±1.4, and 7.4±1.1 mm, respectively. Moreover, OC was classified into three types based on its length. The most common OC length in both sexes was moderate length or type II (62.5%). The mean distance between anterior tips and posterior tips of OC to basion, and opisthion were 11.5±1.4, 39.1±3.3, 25.2±2.2, and 27.4±2.7 mm, respectively. The location of intracranial orifice of HC was commonly found related to middle 1/3 of OC in 45.0%. JF was related to the anterior 2/3 of OC in 81.0%, the anterior 1/3 of OC in 12.5%, and the entire OC length in 6.5%. These morphological analysis and morphometric data should be taken into consideration before performing surgical operation to avoid CVJ instability and neurovascular structure injury.

• 대한영상의학회지
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• 제83권5호
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• pp.1147-1152
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• 2022

특발 두개내압상승은 특별한 기질적 원인 없이 두개 내압의 증가가 생기는 증후군으로 이 질환의 약 10%에서 두개내 정맥동의 혈전 형성이 생길 수 있다고 알려져 있다. 체중이 정상 범위이며 응고 장애가 없는 특발 두개내압상승 환자에게서 정맥동의 혈전 형성은 간과될 수 있다. 본 증례 보고에서는 특별한 위험인자가 없던 환자에게서 설하신경관의 신경 원성 종양으로 오인되었던 정맥동 혈전의 케이스를 소개하고, 두개 내압상승의 다양한 영상 소견에 대해 고찰하고자 한다.