title: Complete middle cerebral artery block without brain infarction.
abstract: We report a patient with progressive supranuclear palsy and incidentally detected the absence of right middle cerebral artery (MCA) without any old or acute infarct in its territory. The magnetic resonance angiography and computed tomography angiography failed to detect any significant collateral circulation. We discuss the embryogenesis of brain circulation and offer a possible explanation for the nonvisualization of the right MCA in our patient.
authors.affiliation: Department of Neurology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India.
authors.forename: Sunil
authors.initials: S
authors.lastname: Pradhan
authors.forename: Surjyaprakash S
authors.initials: SS
authors.lastname: Choudhury
authors.forename: Vimal Kumar
authors.initials: VK
authors.lastname: Paliwal
mesh_terms: D006801:Humans; D033162:Incidental Findings; D020768:Middle Cerebral Artery / Q000002:abnormalities; D013494:Supranuclear Palsy, Progressive / Q000209:etiology