• Medicina · Jan 2018

    Case Reports

    [Lateral medullary stroke with extracranial course of the postero- inferior cerebellar artery].

    • Matías J Alet, Virginia Pujol Lereis, Sebastián F Ameriso, and Luis Lemme-Plaghos.
    • Centro Integral de Neurología Vascular, Instituto de Investigaciones Neurológicas Dr. Raúl Carrea, FLENI, Buenos Aires, Argentina. E-mail: malet@fleni.org.ar.
    • Medicina (B Aires). 2018 Jan 1; 78 (5): 364367364-367.

    AbstractWe present two cases of lateral medullary stroke in subjects with extracranial trajectory of the postero-inferior cerebellar artery. Case 1: a 21-year-old male who presented ataxia and right dysmetria after cervical trauma in a rugby match. Case 2: 56-year-old woman, who started with vertigo and left hemiparesis after intense physical effort. In both cases, the angiographic studies showed an extracranial trajectory of the posterior inferior cerebellar artery. This vessel rarely originates below the foramen magnum, in close relationship with the first three cervical vertebrae and the atlanto-axial joint. At this level, it is exposed to mechanical damage causing dissection, such as direct trauma, abrupt cervical manipulation or prolonged cephalic extension. Therefore, this association should be considered in patients with stroke of the lateral region of the bulb and extracranial trajectory of the posterior-inferior cerebellar artery.

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