Auger R G, Piepgras D G
Department of Neurology, Mayo Clinic, Rochester, MN 55905.
Neurology. 1989 Apr;39(4):577-80. doi: 10.1212/wnl.39.4.577.
Hemifacial spasm (HFS) is rarely due to serious compressive lesions, such as tumors, aneurysms, or vascular malformations, located in the cerebellopontine angle. Because of the interesting association of HFS with epidermoid tumors, we reviewed the records of all patients with HFS and all patients with intracranial epidermoid tumors seen from January 1975 to December 1986. Of the 18 patients who had epidermoid tumors of the cerebellopontine angle, 3 (17%) had a facial movement disorder that resembled HFS at sometime during their illness. There were 429 patients who had HFS with no obvious serious compressive lesion of the facial nerve. Therefore, HFS was associated with epidermoid tumor in 0.7% of cases. All 3 patients developed other findings due to involvement of adjacent neural structures. Patients with HFS have a low probability of having a serious compressive lesion, but those with atypical features should be evaluated for cerebellopontine angle masses such as epidermoid tumors.
半面痉挛（HFS）很少由位于桥小脑角的严重压迫性病变引起，如肿瘤、动脉瘤或血管畸形。由于HFS与表皮样肿瘤存在有趣的关联，我们回顾了1975年1月至1986年12月期间所有HFS患者以及所有颅内表皮样肿瘤患者的记录。在18例患有桥小脑角表皮样肿瘤的患者中，3例（17%）在病程中的某个时候出现了类似HFS的面部运动障碍。有429例HFS患者没有明显的面神经严重压迫性病变。因此，HFS与表皮样肿瘤的关联在0.7%的病例中出现。所有3例患者均因相邻神经结构受累而出现其他表现。HFS患者发生严重压迫性病变的可能性较低，但具有非典型特征的患者应评估是否存在桥小脑角肿物，如表皮样肿瘤。
