Artery of Percheron territory infarct

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Artery of Percheron territory infarct is rare, on account of the relative rarity of the artery of Percheron, and presents with a variety of signs and symptoms collectively termed the paramedian thalamic syndrome.

Clinical presentation

The symptoms could vary in accordance with infarct extension through thalamic or mesencephalic structures ²:

Bilateral paramedian thalamic involvement is usually characterised by a triad of altered mental status, vertical gaze palsy, and memory impairment
When also accompanied by rostral midbrain lesions, a mesencephalothalamic or thalamopeduncular syndrome is characterised. The syndrome, besides the triad related to thalamic involvement, presents other oculomotor disturbances, hemiplegia, cerebellar ataxia, and movement disorders.

Radiographic features

The infarct is restricted to the rostral midbrain and ventromedial thalamus.

Differential diagnosis

top of the basilar artery syndrome
bilateral internal veins thrombosis (dural venous sinus thombosis)
other causes of thalamic restricted diffusion

History and etymology

Described by the French neurologist Gérard Percheron in~~1973~~ 1973.

-<p><strong>Artery of Percheron territory infarct</strong> is rare, on account of the relative rarity of the <a href="/articles/artery-of-percheron">artery of Percheron,</a> and presents with a variety of signs and symptoms collectively termed the <a href="/articles/paramedian-thalamic-syndrome">paramedian thalamic syndrome</a>. </p><h4>Radiographic features</h4><p>The infarct is restricted to the rostral midbrain and ventromedial thalamus. </p><h4>Differential diagnosis</h4><ul>
+<p><strong>Artery of Percheron territory infarct</strong> is rare, on account of the relative rarity of the <a href="/articles/artery-of-percheron">artery of Percheron,</a> and presents with a variety of signs and symptoms collectively termed the <a href="/articles/paramedian-thalamic-syndrome">paramedian thalamic syndrome</a>. </p><h4>Clinical presentation </h4><p>The symptoms could vary in accordance with infarct extension through <a title="Thalamus" href="/articles/thalamus">thalamic</a> or mesencephalic structures <sup>2</sup>:</p><ul>
+<li>Bilateral paramedian thalamic involvement is usually characterised by a triad of altered mental status, vertical gaze palsy, and memory impairment</li>
+<li>When also accompanied by rostral midbrain lesions, a mesencephalothalamic or thalamopeduncular syndrome is characterised. The syndrome, besides the triad related to thalamic involvement, presents other oculomotor disturbances, hemiplegia, cerebellar ataxia, and movement disorders.</li>
+</ul><h4>Radiographic features</h4><p>The infarct is restricted to the rostral midbrain and ventromedial thalamus. </p><h4>Differential diagnosis</h4><ul>
-</ul><h4>History and etymology</h4><p><span style="font-size:12.7272720336914px; line-height:18.9090900421143px">Described</span><span style="font-size:13px; line-height:1.6"> by the French neurologist <strong>Gérard Percheron</strong> in </span>1973.</p>
+</ul><h4>History and etymology</h4><p>Described by the French neurologist <strong>Gérard Percheron</strong> in 1973.</p>

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