No abstract available.
Hemifacial Spasm*

No abstract available.
Hemifacial Spasm*

Vestibular Paroxysmia and facial spasm may be caused by vascular compression of the vestibular and facial root entry zone. We report a case of paroxysmal nystagmus accompanied by facial spasm and which is well visualized by three-dimensional reconstruction images. The 3-dimensional reconstruction image supports the view that vestibular paroxysmia may occur with hemifacial spasm simultaneously due to vascular compression.
Hemifacial Spasm ; Spasm

No abstract available.
Hemifacial Spasm* ; Parotid Gland*

No abstract available.
Blinking* ; Facial Nerve* ; Hemifacial Spasm*

Female ; Hemifacial Spasm ; etiology ; Humans ; Male ; Mastoiditis ; complications ; Middle Aged

Hemifacial Spasm ; etiology ; surgery ; Humans ; Trigeminal Neuralgia ; etiology ; surgery

PURPOSE: To investigate the applicability of the new three-dimensional overlapped reconstruction MR angiography (3-D ORMRA) technique in patients with hemifacial spasm and to compare the new 3-D reconstruction images with conventional MRA source images. MATERIALS AND METHODS: The study group comprised 27 patients with surgically proven hemifacial spasm. In all patients, conventional MRA source images and 3-D fast imaging employing steady-state acquisition (FIESTA) images were obtained prospectively. After 3-D MR angiographic images were obtained, the 3-D MRA and FIESTA images were overlapped at the workstation by using GE A/W 4.2 add/sub software. We analyzed the relationship between the offending vessels and root exit zone of the facial nerve using both 3-D ORMRA images and conventional MRA source images. RESULTS: In 25 of 27 patients, the offending vessel at the REZ of the facial nerve could be correctly identified on conventional MRA source images. In all patients, the presumed offending vessels depicted by the overlapped 3-D reconstruction MRA image corresponded well with the intraoperative findings. The 3-D reconstruction image showed more clear visualization of the spatial relationship between the offending vessels and the root exit zone of the facial nerve. CONCLUSION: The overlapped 3-D reconstruction MR angiography technique is very useful and informative in patients with hemifacial spasm, as compared with conventional MRA angiography technique.
Angiography ; Facial Nerve ; Hemifacial Spasm* ; Humans ; Prospective Studies

A rare case of hemifacial spasm caused by an ipsilateral tentorial meningioma is described. Magnetic resonance imaging showed a huge tumor in the right cerebellar hemisphere, distant to the cerebello-pontine cistern. The facial-vestibulocochlear nerve complex was stretched by the shift of the brainstem and the right cerebello-pontine cistern was effaced. After removing the tumor, the hemifacial spasm resolved completely. We review our case with the pertinent literature regarding the etiological mechanism.
Brain Stem ; Hemifacial Spasm ; Infratentorial Neoplasms ; Magnetic Resonance Imaging ; Meningioma

Forty-one patients with hemifacial spasm received botulinum A toxin in total 73 visits. In 68 of 73 visits(93%), substantial improvement with peak effect(change in severity of hemifacial spasm 22 ) was obtained, with a mean total dose of 12.5 units. Mean severity of hemifacial spasm before and after treatrnent were 3.8 and 1.1 respectively on a 0-5 scale. Mean muscle dose of orbicularis oculi was 9.0 units There was a significant association between muscle dose and post-treatment weakness of orbicularis oculi(Spearman correlation coefficient, 0.42691). There was also a striking and significant association between post-treatment weakness of orbicularis oculi and peak effect(Spearman correlation coefficient, 0.74883). Lagophthalmos occurred only in 2 of 28 visits (7%) who received lesser than 10.0 units for orbicularis oculi as compard to 22% in the higher dose group. But peak effects showed no significant difference between the two groups(p =O.I30). We suggest that the occurrence of lagophthalmos can be reduced with the dose lesser than 10.0 units for orbicularis oculi, maintaining the significant effect.
Botulinum Toxins, Type A* ; Hemifacial Spasm* ; Humans ; Strikes, Employee