Posterior inferior cerebellar artery (PICA) infarct
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Posterior inferior cerebellar artery (PICA) occlusion may cause infarction of the posterior inferior cerebellum, inferior cerebellar vermis and lateral medulla.
Epidemiology
Typically considered the most common territory involved in cerebellar infarction, although at least one study1 has demonstrated similar frequencies of PICA and SCA infarcts.
Clinical presentation
Vertigo, nausea and truncal ataxia are the most common presenting features. Signs of a lateral medullary syndrome may coexist in ~30% 2.
-<p><strong>Posterior inferior cerebellar artery (PICA) occlusion</strong> may cause infarction of the posterior inferior cerebellum, inferior cerebellar vermis and lateral medulla.</p><h4>Epidemiology</h4><p>Typically considered the most common territory involved in <a href="/articles/cerebellar-infarction">cerebellar infarction</a>, although at least one study <sup>1</sup> has demonstrated similar frequencies of PICA and SCA infarcts.</p><h4>Clinical presentation</h4><p>Vertigo, nausea and truncal ataxia are the most common presenting features. Signs of a <a href="/articles/lateral-medullary-syndrome">lateral medullary syndrome</a> may coexist in ~30% <sup>2</sup>.</p>- +<p><strong>Posterior inferior cerebellar artery (PICA) occlusion</strong> may cause infarction of the posterior inferior cerebellum, inferior cerebellar vermis and lateral medulla.</p><h4>Epidemiology</h4><p>Typically considered the most common territory involved in <a href="/articles/cerebellar-infarction">cerebellar infarction</a>, although at least one study <sup>1</sup> has demonstrated similar frequencies of PICA and SCA infarcts.</p><h4>Clinical presentation</h4><p>Vertigo, nausea and truncal ataxia are the most common presenting features. Signs of a <a href="/articles/lateral-medullary-syndrome">lateral medullary syndrome</a> may coexist in ~30% <sup>2</sup>.</p>
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