Guntinas-Lichius O, Wagner M, Michel O
Klinik und Poliklinik für HNO-Heilkunde, Kopf- und Hals-Chirurgie, Universität zu Köln.
HNO. 1999 Apr;47(4):279-82. doi: 10.1007/s001060050396.
Facial nerve schwannomas are rare benign tumors, when occurring, they are located most frequently in the distal fallopian canal and present as extracranial masses. The predominant symptom is a progressive facial nerve paralysis. We report a 20-year-old woman with an intracranial schwannoma originating from the greater superficial petrosal nerve that had wide extension into the pterygopalatine fossa. The motor facial nerve including the geniculate ganglion was not affected. The patient presented with vertigo, progressive hearing loss and mild facial nerve synkinesis but without a lacrimation deficit. The tumor was detected by computed tomography and magnetic resonance imaging. The schwannoma was completely removed using an intracranial, extradural middle fossa approach during which complete preservation of the motor facial nerve was possible. To our knowledge this is the first reported case of an isolated schwannoma of the greater superficial petrosal nerve without involvement of the motor facial nerve.
面神经鞘瘤是罕见的良性肿瘤，一旦发生，最常位于面神经管远端，并表现为颅外肿块。主要症状是进行性面神经麻痹。我们报告一例20岁女性，患有起源于岩浅大神经的颅内神经鞘瘤，该肿瘤广泛延伸至翼腭窝。包括膝状神经节在内的面神经运动支未受影响。患者表现为眩晕、进行性听力丧失和轻度面神经联动，但无泪液分泌障碍。通过计算机断层扫描和磁共振成像检测到该肿瘤。采用颅内硬膜外中颅窝入路将神经鞘瘤完全切除，术中有可能完全保留面神经运动支。据我们所知，这是首例报道的孤立性岩浅大神经鞘瘤，未累及面神经运动支。
