<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0872-671X</journal-id>
<journal-title><![CDATA[Medicina Interna]]></journal-title>
<abbrev-journal-title><![CDATA[Medicina Interna]]></abbrev-journal-title>
<issn>0872-671X</issn>
<publisher>
<publisher-name><![CDATA[Sociedade Portuguesa de Medicina Interna]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0872-671X2021000200033</article-id>
<article-id pub-id-type="doi">10.24950/cc/214/20/2/2021</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Artery of Percheron Infarction: Case Report]]></article-title>
<article-title xml:lang="pt"><![CDATA[Enfarte da Arteria de Percheron: Caso Clínico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pinheiro]]></surname>
<given-names><![CDATA[Hugo Celso]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bela]]></surname>
<given-names><![CDATA[Margarida]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Magalhães]]></surname>
<given-names><![CDATA[Nuno]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mesquita]]></surname>
<given-names><![CDATA[Mari]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro Hospitalar Tâmega e Sousa Departamento de Medicina Interna ]]></institution>
<addr-line><![CDATA[Penafiel ]]></addr-line>
<country>Portugal</country>
</aff>
<pub-date pub-type="pub">
<day>30</day>
<month>06</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>30</day>
<month>06</month>
<year>2021</year>
</pub-date>
<volume>28</volume>
<numero>2</numero>
<fpage>33</fpage>
<lpage>36</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_arttext&amp;pid=S0872-671X2021000200033&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_abstract&amp;pid=S0872-671X2021000200033&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_pdf&amp;pid=S0872-671X2021000200033&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  The artery of Percheron (AOP) is a normal variant that supplies the thalamus. AOP infarcts may originate a spectrum of unusual clinical presentations. The diagnosis is difficult due to the lack of sensitivity of detection by CT scan and to the lack of acknowledgment of this clinical entity. We describe the case of a patient who presented with unresponsiveness due to an AOP infarct. Our report serves as a reminder to consider AOP infarct as differential diagnosis when assessing patients with unspecific neurological deficits of unclear origin. Further we reinforce the claim for a low threshold for MRI in patients presenting acutely with otherwise unexplainable neurological symptoms to facilitate diagnosis and decrease patient morbidity.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo  A artéria de Percheron (AOP) e uma variante normal que irriga o talamo. Os enfartes da AOP podem originar um espectro alargado de apresentacoes clinicas invulgares. O seu diagnostico e dificultado pela conjuncao de dois factores: falta de sensibilidade da tomografia computadorizada e falta de conhecimento desta entidade motivada pela sua raridade. Descrevemos o caso de uma doente com coma por enfarte da AOP. Pretendemos salientar a importancia de considerar esta entidade no diagnostico diferencial de doentes com defices neurologicos vagos de origem indeterminada. Reforcamos ainda a necessidade de baixar o limiar para a realizacao de ressonancia magnetica com o objetivo de facilitar o diagnostico e diminuir a morbilidade associada.]]></p></abstract>
<kwd-group>
<kwd lng="pt"><![CDATA[Arteria Cerebral Posterior/diagnostico por imagem]]></kwd>
<kwd lng="pt"><![CDATA[Enfarte Cerebral/diagnostico por imagem]]></kwd>
<kwd lng="pt"><![CDATA[Ressonancia magnetica.]]></kwd>
<kwd lng="en"><![CDATA[Cerebral Infarction/diagnostic imaging]]></kwd>
<kwd lng="en"><![CDATA[Magnetic Resonance Imaging]]></kwd>
<kwd lng="en"><![CDATA[Posterior Cerebral Artery/diagnostic imaging.]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Amin]]></surname>
<given-names><![CDATA[OS]]></given-names>
</name>
<name>
<surname><![CDATA[Shwani]]></surname>
<given-names><![CDATA[SS]]></given-names>
</name>
<name>
<surname><![CDATA[Zangana]]></surname>
<given-names><![CDATA[HM]]></given-names>
</name>
<name>
<surname><![CDATA[Hussein]]></surname>
<given-names><![CDATA[EM]]></given-names>
</name>
<name>
<surname><![CDATA[Ameen]]></surname>
<given-names><![CDATA[NA]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Bilateral infarction of paramedian thalami a report of two cases of artery of Percheron occlusion and review of the literature]]></article-title>
<source><![CDATA[BMJ Case Rep]]></source>
<year>2011</year>
<volume>2011</volume>
<page-range>bcr0920103304</page-range></nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cassourret]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Prunet]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Sbardella]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Bordes]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Maurin]]></surname>
<given-names><![CDATA[O]]></given-names>
</name>
<name>
<surname><![CDATA[Boret]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Ischemic Stroke of the Artery of Percheron with Normal Initial MRI A Case Report]]></article-title>
<source><![CDATA[Case Rep Med]]></source>
<year>2010</year>
<page-range>425734</page-range></nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Godani]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Auci]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Torri]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Jensen]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Del Sette]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Coma with Vertical Gaze Palsy Relevance of Angio-CT in Acute Percheron Artery Syndrome]]></article-title>
<source><![CDATA[Case Rep Neurol]]></source>
<year>2010</year>
<volume>2</volume>
<page-range>74-9</page-range></nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kocaeli]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Yilmazlar]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Kuytu]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Korfali]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The artery of Percheron revisited A cadaveric anatomical study]]></article-title>
<source><![CDATA[Acta Neurochir]]></source>
<year>2013</year>
<volume>155</volume>
<page-range>533-9</page-range></nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Vinod K]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<name>
<surname><![CDATA[Kaaviya]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Arpita]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Artery of Percheron Infarction]]></article-title>
<source><![CDATA[Ann Neurosci]]></source>
<year>2016</year>
<volume>23</volume>
<page-range>124-6</page-range></nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Yamamoto]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Georgiadis]]></surname>
<given-names><![CDATA[AL]]></given-names>
</name>
<name>
<surname><![CDATA[Chang]]></surname>
<given-names><![CDATA[HM]]></given-names>
</name>
<name>
<surname><![CDATA[Caplan]]></surname>
<given-names><![CDATA[LR]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Posterior cerebral artery territory infarcts in the New England Medical Center Posterior Circulation Registry]]></article-title>
<source><![CDATA[Arch Neurol]]></source>
<year>1999</year>
<volume>56</volume>
<page-range>824-32</page-range></nlm-citation>
</ref>
<ref id="B7">
<label>7</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Chen]]></surname>
<given-names><![CDATA[XY]]></given-names>
</name>
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[Q]]></given-names>
</name>
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[X]]></given-names>
</name>
<name>
<surname><![CDATA[Wong]]></surname>
<given-names><![CDATA[KS]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Clinical Features of Thalamic Stroke]]></article-title>
<source><![CDATA[Curr Treat Options Neurol]]></source>
<year>2017</year>
<volume>19</volume>
<page-range>5</page-range></nlm-citation>
</ref>
<ref id="B8">
<label>8</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hammersley]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Arora]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Dissanayake]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Sengupta]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Fluctuating drowsiness following cardiac catheterisation artery of Percheron ischaemic stroke causing bilateral thalamic infarcts]]></article-title>
<source><![CDATA[BMJ Case Rep]]></source>
<year>2017</year>
<volume>2017</volume>
<page-range>bcr2016218035</page-range></nlm-citation>
</ref>
<ref id="B9">
<label>9</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bailey]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Khadjooi]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Lesson of the month 1 Artery of Percheron occlusion - an -uncommon cause of coma in a middle-aged man]]></article-title>
<source><![CDATA[Clin Med]]></source>
<year>2016</year>
<volume>16</volume>
<page-range>86-7</page-range></nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kopelman]]></surname>
<given-names><![CDATA[MD]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[What does a comparison of the alcoholic Korsakoff syndrome and thalamic infarction tell us about thalamic amnesia]]></article-title>
<source><![CDATA[Neurosci Biobehav Rev]]></source>
<year>2015</year>
<volume>54</volume>
<page-range>46-56</page-range></nlm-citation>
</ref>
<ref id="B11">
<label>11</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zhou]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Fox]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Anand]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Elhaj]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Kapoor]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Najibi]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Artery of Percheron Infarction as an Unusual Cause of Korsakoff's Syndrome]]></article-title>
<source><![CDATA[Case Rep Neurol Med]]></source>
<year>2015</year>
<page-range>927809</page-range></nlm-citation>
</ref>
<ref id="B12">
<label>12</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Turner]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Richardson]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Kane]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Vundavalli]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Decreased consciousness bilateral thalamic infarction and its relation to the artery of Percheron]]></article-title>
<source><![CDATA[BMJ Case Rep]]></source>
<year>2014</year>
<volume>2014</volume>
<page-range>bcr2013201848</page-range></nlm-citation>
</ref>
<ref id="B13">
<label>13</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zappella]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Merceron]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Nifle]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Hilly-Ginoux]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Bruneel]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Troche]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Artery of Percheron infarction as an unusual cause of coma three cases and literature review]]></article-title>
<source><![CDATA[Neurocrit Care]]></source>
<year>2014</year>
<volume>20</volume>
<page-range>494-501</page-range></nlm-citation>
</ref>
<ref id="B14">
<label>14</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Krampla]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
<name>
<surname><![CDATA[Schmidbauer]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Hruby]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Ischaemic stroke of the artery of Percheron (2007: 10b).]]></article-title>
<source><![CDATA[Eur Radiol]]></source>
<year>2008</year>
<volume>18</volume>
<page-range>192-4</page-range></nlm-citation>
</ref>
<ref id="B15">
<label>15</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Xu]]></surname>
<given-names><![CDATA[Z]]></given-names>
</name>
<name>
<surname><![CDATA[Sun]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Duan]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Zhang]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Zhang]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Cai]]></surname>
<given-names><![CDATA[X]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Assessment of Percheron infarction in images and clinical findings]]></article-title>
<source><![CDATA[J Neurol Sci]]></source>
<year>2017</year>
<volume>383</volume>
<page-range>87-92</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
