Trochlear myokymia secondary to cerebellopontine angle arachnoid cyst.
Superior oblique myokymia (SOM) is a rare disorder with an unclear pathogenesis. We describe a first reported case of chronic disabling SOM in association with a cerebellopontine angle arachnoid cyst, who had a gradual and eventually complete symptomatic resolution 8 months following cyst marsupialisation. Among other aetiologies, SOM may therefore be due to abnormal CSF flow dynamics resulting in structural compromise of the nerve.
Department of Neurosurgery, Institute of Clinical Neurosciences, Frenchay Hospital, Bristol, UK.
Kumar
K
Abhinav
Nicholas D
ND
Park
Nikunj K
NK
Patel
D000328:Adult; D016080:Arachnoid Cysts / Q000150:complications* / Q000175:diagnosis / Q000601:surgery; D002526:Cerebellar Diseases / Q000150:complications* / Q000175:diagnosis / Q000601:surgery; D002530:Cerebellopontine Angle; D002908:Chronic Disease; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D011182:Postoperative Care / Q000379:methods; D020432:Trochlear Nerve Diseases / Q000209:etiology* / Q000601:surgery