<?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>0186-4866</journal-id>
<journal-title><![CDATA[Medicina interna de México]]></journal-title>
<abbrev-journal-title><![CDATA[Med. interna Méx.]]></abbrev-journal-title>
<issn>0186-4866</issn>
<publisher>
<publisher-name><![CDATA[Edición y Farmacia S.A. de C.V.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0186-48662018000100018</article-id>
<article-id pub-id-type="doi">10.24245/mim.v34i1.1531</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Infarto talámico bilateral secundario a oclusión de la arteria de Percherón]]></article-title>
<article-title xml:lang="en"><![CDATA[Bilateral thalamic infarct secondary to Percheron&#8217;s artery occlusion.]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Galnares-Olalde]]></surname>
<given-names><![CDATA[JA]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[León-Mayorga]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Halabe-Cherem]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rubalcava-Ortega]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alegría-Loyola]]></surname>
<given-names><![CDATA[MA]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro Médico ABC  ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
</aff>
<aff id="Af2">
<institution><![CDATA[,Centro Médico ABC  ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
</aff>
<aff id="Af3">
<institution><![CDATA[,Centro Médico ABC  ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
</aff>
<aff id="Af4">
<institution><![CDATA[,Centro Médico ABC  ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>02</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>02</month>
<year>2018</year>
</pub-date>
<volume>34</volume>
<numero>1</numero>
<fpage>157</fpage>
<lpage>161</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0186-48662018000100018&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0186-48662018000100018&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0186-48662018000100018&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: La arteria de Percherón es una variante vascular que se caracteriza por una arteria tálamo-perforante dominante originada en el segmento P1 de la arteria cerebral posterior y se bifurca para irrigar a ambos tálamos en su porción paramedial. Su obstrucción se traduce en infartos talámicos bilaterales en el sitio paramedial. Se comunica el caso de un paciente de 85 años de edad con alteraciones en el estado de conciencia, con poca interacción con el medio y parálisis vertical de la mirada, al que se le realizó una resonancia magnética que evidenció infartos talámicos bilaterales. Las lesiones talámicas bilaterales son poco frecuentes. Los infartos talámicos representan 11% de los eventos vasculares y los bilaterales de 22 a 35% de los eventos vasculares talámicos; generalmente son de origen embólico y en raras ocasiones se asocian con hipoperfusión. La tríada típica incluye alteraciones del estado de conciencia, alteraciones de la memoria y parálisis vertical de la mirada. Aunque es una enfermedad infrecuente, es importante considerar la realización de estudios de imagen en pacientes con alteraciones del estado de conciencia que permitan descartar infartos talámicos como parte del diagnóstico diferencial.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: The Percheron&#8217;s artery is a vascular variant characterized by the presence of a dominant thalamic-perforating artery originated in the P1 segment of the posterior cerebral artery; it forks to irrigate both thalamus in its paramedial portion. Its obstruction results in bilateral thalamic infarcts in the paramedial site. This paper reports the case of an 85-year-old man evaluated for alterations in the state of consciousness, associated with little interaction with the environment and vertical paralysis of the gaze. MRI evidenced bilateral thalamic stroke. The presentation of bilateral thalamic lesions is rare. The thalamic infarcts represent 11% of the vascular events, and the bilateral events 22 to 35% of the thalamic vascular events; they usually have an embolic origin and they are rarely associated with hypoperfusion. The typical triad includes alterations of the state of consciousness, alterations of the memory and vertical paralysis of the gaze. Although this is an infrequent disease, it is important to consider the performance of imaging studies in patients with alterations of the state of consciousness that allow to discard thalamic infarctions as part of the differential diagnosis.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Arteria cerebral posterior]]></kwd>
<kwd lng="es"><![CDATA[infartos talámicos]]></kwd>
<kwd lng="es"><![CDATA[accidente cerebral vascular]]></kwd>
<kwd lng="en"><![CDATA[Posterior cerebral artery]]></kwd>
<kwd lng="en"><![CDATA[Thalamic infarcts]]></kwd>
<kwd lng="en"><![CDATA[Stroke]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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