Miyazawa N, Yamazaki H, Wakao T, Nukui H
Department of Neurosurgery, Yamanashi Prefectural Central Hospital, Kofu, Japan.
Neurosurgery. 1989 Dec;25(6):951-5.
Lesions of Meckel's cave are extremely uncommon and difficult to diagnose. The symptoms and signs are variable, and the lesions may not appear on routine roentgenographic or computed tomographic examination. A patient with a small epidermoid tumor of Meckel's cave that was diagnosed by magnetic resonance imaging is herein reported. The epidermoid appeared as a low-intensity mass on the T1-weighted image and as a high-intensity mass on the T2-weighted image. Coronal sections defined the anatomic relationship to the trigeminal nerve. Preoperative recordings of the trigeminal sensory evoked response may be predictive of postoperative recovery of neurological deficits. Furthermore, intraoperative recording was extremely useful in avoiding inadvertent neurological injury. Review of the literature confirms the rarity of this lesion and the usefulness of magnetic resonance imaging in diagnosing it, although based on a limited number of cases.
梅克尔腔病变极为罕见且难以诊断。其症状和体征多变，常规X线或计算机断层扫描检查可能无法显示这些病变。本文报告了一例通过磁共振成像诊断为梅克尔腔小表皮样肿瘤的患者。该表皮样肿瘤在T1加权图像上表现为低强度肿块，在T2加权图像上表现为高强度肿块。冠状切面确定了与三叉神经的解剖关系。术前三叉神经感觉诱发电位记录可能有助于预测术后神经功能缺损的恢复情况。此外，术中记录对于避免意外神经损伤极为有用。文献回顾证实了该病变的罕见性以及磁共振成像在诊断中的有用性，尽管所依据的病例数量有限。
