<?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>0120-8748</journal-id>
<journal-title><![CDATA[Acta Neurológica Colombiana]]></journal-title>
<abbrev-journal-title><![CDATA[Acta Neurol Colomb.]]></abbrev-journal-title>
<issn>0120-8748</issn>
<publisher>
<publisher-name><![CDATA[Asociación Colombiana de Neurología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0120-87482017000200119</article-id>
<article-id pub-id-type="doi">10.22379/24224022143</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Gliomas tipo astrocytoma pilocítico "atípico recurrente" y gen B-RAF: presentación de caso clínico, discusión]]></article-title>
<article-title xml:lang="en"><![CDATA[Glioma type pilocytic astrocytoma "atypical recurrent" and gen BRAF:Clinical case presentation, discussion]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González Trujillo]]></surname>
<given-names><![CDATA[Fernando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cafiero]]></surname>
<given-names><![CDATA[Sergio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Olaya]]></surname>
<given-names><![CDATA[Natalia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lozano Castillo]]></surname>
<given-names><![CDATA[Alfonso Javier]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Romero Rojas]]></surname>
<given-names><![CDATA[Alfredo Ernesto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Penagos González]]></surname>
<given-names><![CDATA[Pedro José]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Zubieta Vega]]></surname>
<given-names><![CDATA[Camilo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gil]]></surname>
<given-names><![CDATA[Nicolás]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Melo Gómez]]></surname>
<given-names><![CDATA[Gonzalo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Clínica de Occidente  ]]></institution>
<addr-line><![CDATA[Santiago de Cali ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Clínica del Occidente  ]]></institution>
<addr-line><![CDATA[Santiago de Cali ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Nacional de Cancerología  ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Nacional de Colombia  ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Instituto Nacional de Cancerología  ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af6">
<institution><![CDATA[,Instituto Nacional de Cancerología  ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af7">
<institution><![CDATA[,Instituto Nacional de Cancerología  ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af8">
<institution><![CDATA[,Instituto Nacional de Cancerología  ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af9">
<institution><![CDATA[,Instituto Nacional de Cancerología  ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2017</year>
</pub-date>
<volume>33</volume>
<numero>2</numero>
<fpage>119</fpage>
<lpage>126</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0120-87482017000200119&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0120-87482017000200119&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0120-87482017000200119&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El astrocitoma pilocítico (AP) es una neoplasia bien diferenciada, grado I OMS,que predomina en la infancia y es raro en la población adulta. Se reportan casos atípicos con una biología tumoral agresiva que continúan preservando la histología benigna o se transforman hacia gliomas de alto grado. Algunos estudios genéticos en esté subtipo de tumor referencian la activación de la vía MAPK/ERK a través de cambios en el gen BRAF. El objetivo del grupo es presentar un caso clínico representativo de un AP con evolución "atípica" y realizar una revisión actualizada desde la biología, genética, las posibilidades terapéuticas emergentes y exponer las controversias del tratamiento desde lo quirúrgico y las terapias complementarias.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[SUMMARY The pilocytic astrocytoma (PA), formerly referred to as juvenile pilocytic astrocytomas, are WHO grade I tumors, that commonly occur during childhood and rarely in the adult population. Genetic studies of this tumor report an activation of the MAPK / ERK pathway through changes in the BRAF gene. The aim of this article is to report a series of atypical PA cases with an aggressive tumor biology that continue preserving the benign histology or transformed into high-grade gliomas, and review the biology, genetics, and emerging therapeutic possibilities for these cases. And finally expose controversies from the surgical treatment and complementary therapies.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[gliomas]]></kwd>
<kwd lng="es"><![CDATA[gen]]></kwd>
<kwd lng="es"><![CDATA[mutación]]></kwd>
<kwd lng="es"><![CDATA[deleción]]></kwd>
<kwd lng="es"><![CDATA[atípico]]></kwd>
<kwd lng="es"><![CDATA[(DeCS)]]></kwd>
<kwd lng="en"><![CDATA[Gliomas]]></kwd>
<kwd lng="en"><![CDATA[gene]]></kwd>
<kwd lng="en"><![CDATA[mutation]]></kwd>
<kwd lng="en"><![CDATA[deletion]]></kwd>
<kwd lng="en"><![CDATA[atypical]]></kwd>
<kwd lng="en"><![CDATA[(MeSH)]]></kwd>
</kwd-group>
</article-meta>
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