1/5. Facial myokymia and brain stem tumor.An autoptic case of facial myokymia in glioma of the pons is described. The facial myokymia was the only symptom for many years. The authors emphasize the importance of the facial myokymia as a precocious sign of pons tumor and stress the meaning of the EMG in the differential diagnosis between facial myokymia in brain stem tumor and facial hyperkinesa in other diseases.- - - - - - - - - - ranking = 1keywords = myokymia (Clic here for more details about this article) |
2/5. Superior oblique myokymia associated with a posterior fossa tumor: oculographic correlation with an idiopathic case.Superior oblique myokymia (SOM) was the only neurologic sign in a patient with an astrocytoma involving the midbrain tectum. Oculography showed monocular bursts of tonic and phasic intorsion and depression and miniature oscillations identical to those of idiopathic SOM. SOM stopped after tumor resection.- - - - - - - - - - ranking = 0.625keywords = myokymia (Clic here for more details about this article) |
3/5. Facial myokymia.Facial myokymia is an uncommon form of dyskinesia, usually resulting from a lesion in the brain stem. The electromyogram is typical. A case is reported. The condition was due to an astrocytoma of the brain stem.- - - - - - - - - - ranking = 0.625keywords = myokymia (Clic here for more details about this article) |
4/5. Facial myokymia in the course of a pontine tumor.A patient with facial myokymia, suffering from an infiltrating grade II astrocytoma originating within the pons with vegetations invading the cerebellopontine angle, was studied clinically and electromyographically from 1973 to 1979. The myokymias started in the muscles of the right side of the face and later spread to the left side. The latter point is worth noting because the myokymias of the left side were detectable by EMG but not by inspection. They preceded clinical and instrumental evidence of a contralateral spread of tumoral damage to the brainstem. From the physiopathogenetic angle they point up the importance of a mechanism of hyperexcitability and release of the facial motoneuronal pool. The results of the EMG study suggest that the persistence of myokymia, its association with an ingravescent neurogenic impairment of the facial musculature and its polymorphism in the course of pontine tumors are more reliable features than their discontinuity and rhythmicity.- - - - - - - - - - ranking = 1keywords = myokymia (Clic here for more details about this article) |
5/5. Facial myokymia and spastic paretic facial contracture as the result of anaplastic pontocerebellar glioma.The case of a 36-year-old man who sought treatment of right facial myokymia and spastic paretic facial contracture is reported. Computed tomography and magnetic resonance imaging revealed a tumor located in the right cerebellar peduncle and the right dorsal pons bulging into the fourth ventricle. After microsurgical partial resection of the mass, which was verified histologically as an anaplastic glioma, facial myokymia initially ceased. The vermicular rippling movements were less intense upon recurrence and could be controlled by low-dose dexamethasone in the further course, when magnetic resonance imaging showed an interstitial pontine edema after percutaneous radiation therapy. It is assumed that facial myokymia and spastic paretic facial contracture were generated by ectopic activity due to alterations in the microenvironment at the intrapontine portion of the axons of the seventh nerve caused by the compressive effect of the tumor and later by edema.- - - - - - - - - - ranking = 0.875keywords = myokymia (Clic here for more details about this article) |