A 54-year-old, right-handed male presented with acute-onset severe headache, vertigo, and vomiting. Initial neurologic examination illustrated dysarthria (lingual), nystagmus (horizontal), left dysmetria on finger-to-nose testing, weakness of the upper lower limb. Magnetic resonance imaging showed lateral medullary infarction (Wallenberg syndrome). The patient was discharged 3 weeks later to an...

Lateral medullary infarction rarely leads to central hypoventilation syndrome (CHS). CHS is a life-threatening disorder characterized by hypoventilation during sleep. We report the first case of CHS as a complication of lateral medullary infarction after endovascular treatment. A 65-year-old man presented twice with severe headache. Computed tomography revealed subarachnoid hemorrhage and cereb...

Opalski syndrome is a rare vascular brainstem syndrome which is accepted as a variant of Wallenberg syndrome. Opalski syndrome should be considered in acute conditions in which typical symptoms of lateral medullary infarct are accompanied by ipsilateral hemiparesis. Other brain stem syndromes are distinguished from Opalski syndrome by the presence of contralateral hemiparesis.

that supplied both frontal lobes. The circle of Willis as an anatomic structure can be defined as a network of blood vessels affording communication between the carotid system and the basilar system, encompassing an anterior and two posterior communicating arteries and proximal portions of the anterior and posterior cerebral arteries. However, this description is still not fully satisfying beca...

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Vertebral Artery Occlusion Following Hyperextension and Rotation of the Head • This is a case report of a lateral medullary syndrome of Wallenberg following occlusion of one vertebral artery and stenosis of the opposite artery precipitated by combined motion of hyperextension, rotation, and lateral flexion of the head within physiological limits. Sufficient duration of such head position appear...

Lateral medullary syndrome (LMS) is an ischemic disease of the medulla oblongata, which involves the territory of the posterior inferior cerebellar artery. Lateral medullary syndrome is often missed as the cause of autonomic dysregulation in patients with recent brain stem stroke. Due to the location of the baroreceptor regulatory center in the lateral medulla oblongata, patients with LMS occas...