{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,22]],"date-time":"2026-09-22T14:47:05Z","timestamp":1790088425573,"version":"4.0.1"},"reference-count":17,"publisher":"Oxford University Press (OUP)","issue":"5","license":[{"start":{"date-parts":[[2021,4,12]],"date-time":"2021-04-12T00:00:00Z","timestamp":1618185600000},"content-version":"vor","delay-in-days":1,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2021,6,22]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>Hemifacial spasm is typically caused by vascular compression of the proximal intracranial facial nerve. Although the prevalence of neurovascular compression has been investigated in a cohort of patients with classical trigeminal neuralgia, the prevalence and severity of neurovascular compression has not been well characterized in patients with hemifacial spasm. We aimed to investigate whether presence and severity of neurovascular compression are correlated to the symptomatic side in patients with hemifacial spasm. All patients in our study were evaluated by a physician who specializes in the management of cranial nerve disorders. Once hemifacial spasm was diagnosed on physical exam, the patient underwent a dedicated cranial nerve protocol magnetic resonance imaging study on a 3 T scanner. Exams were retrospectively reviewed by a neuroradiologist blinded to the symptomatic side. The presence, severity, vessel type, and location of neurovascular compression along the facial nerve was recorded. Neurovascular compression was graded as contact alone (vessel touching the facial nerve) versus deformity (indentation or deviation of the nerve by the culprit vessel). A total of 330 patients with hemifacial spasm were included. The majority (232) were female while the minority (98) were male. The average age was 55.7 years. Neurovascular compression (arterial) was identified on both the symptomatic (97.88%) and asymptomatic sides (38.79%) frequently. Neurovascular compression from an artery along the susceptible\/proximal portion of the nerve was much more common on the symptomatic side (96.36%) than on the asymptomatic side (12.73%), odds ratio = 93.00, P\u2009&amp;lt;\u20090.0001. When we assessed severity of arterial compression, the more severe form of neurovascular compression, deformity, was noted on the symptomatic side (70.3%) much more frequently than on the asymptomatic side (1.82%) (odds ratio = 114.00 P\u2009&amp;lt;\u20090.0001). We conclude that neurovascular compression that results in deformity of the susceptible portion of the facial nerve is highly associated with the symptomatic side in hemifacial spasm.<\/jats:p>","DOI":"10.1093\/brain\/awab030","type":"journal-article","created":{"date-parts":[[2021,2,3]],"date-time":"2021-02-03T16:47:21Z","timestamp":1612370841000},"page":"1482-1487","source":"Crossref","is-referenced-by-count":43,"title":["Prevalence and severity of neurovascular compression in hemifacial spasm patients"],"prefix":"10.1093","volume":"144","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0014-1837","authenticated-orcid":false,"given":"Katie S","family":"Traylor","sequence":"first","affiliation":[{"name":"Department of Radiology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"suffix":"Jr","given":"Raymond F","family":"Sekula","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, PA, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Komal","family":"Eubanks","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, PA, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nallammai","family":"Muthiah","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, PA, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yue-Fang","family":"Chang","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, PA, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marion A","family":"Hughes","sequence":"additional","affiliation":[{"name":"Department of Radiology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA"},{"name":"Department of Otolaryngology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","published-online":{"date-parts":[[2021,4,11]]},"reference":[{"key":"2021070719462208500_awab030-B1","doi-asserted-by":"crossref","first-page":"193","DOI":"10.3171\/2016.9.JNS161022","article-title":"An investigation into quality of life improvement in patients undergoing microvascular decompression for hemifacial spasm","volume":"128","author":"Lawrence","year":"2018","journal-title":"J Neurosurg"},{"key":"2021070719462208500_awab030-B2","doi-asserted-by":"crossref","first-page":"383","DOI":"10.1159\/000319883","article-title":"Surgical outcome and improvement in quality of life after microvascular decompression for hemifacial spasms: A case series assessment using a validated disease-specific scale","volume":"88","author":"Ray","year":"2010","journal-title":"Stereotact Funct 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