<?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>2444-6483</journal-id>
<journal-title><![CDATA[Endoscopia]]></journal-title>
<abbrev-journal-title><![CDATA[Endoscopia]]></abbrev-journal-title>
<issn>2444-6483</issn>
<publisher>
<publisher-name><![CDATA[Asociación Mexicana de Endoscopia Gastrointestinal A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2444-64832020000200069</article-id>
<article-id pub-id-type="doi">10.24875/end.20000040</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Tumor duodenal del estroma gastrointestinal: una causa poco frecuente de hemorragia digestiva]]></article-title>
<article-title xml:lang="en"><![CDATA[Duodenal gastrointestinal stromal tumor: an uncommon cause of digestive tract bleeding]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Baeza-Zapata]]></surname>
<given-names><![CDATA[Armando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Scharrer-Cabello]]></surname>
<given-names><![CDATA[Susanna]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Herrera-Figueroa]]></surname>
<given-names><![CDATA[Carlos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-de León]]></surname>
<given-names><![CDATA[Óscar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez-Hinojosa]]></surname>
<given-names><![CDATA[Edwars]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Jáquez-Quintana]]></surname>
<given-names><![CDATA[Joel O.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital Universitario José Eleuterio González Departamento de Gastroenterología y Endoscopia Digestiva ]]></institution>
<addr-line><![CDATA[Monterrey N.L.]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Hospital Universitario José Eleuterio González Departamento de Cirugía General ]]></institution>
<addr-line><![CDATA[Monterrey N.L.]]></addr-line>
<country>México</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Hospital Universitario José Eleuterio González Departamento de Anatomía Patológica ]]></institution>
<addr-line><![CDATA[Monterrey N.L.]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2020</year>
</pub-date>
<volume>32</volume>
<numero>2</numero>
<fpage>69</fpage>
<lpage>71</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2444-64832020000200069&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2444-64832020000200069&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2444-64832020000200069&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Los tumores del estroma gastrointestinal (GIST) representan la mayoría de los tumores mesenquimales del tracto gastrointestinal, solo el 5% se localizan en el duodeno. Los avances en los últimos 30 años en el campo de la medicina molecular, genética e inmunohistoquímica han permitido identificar mejor este subgrupo de tumores y brindar un tratamiento específico. Presentamos el caso de un hombre de 61 años con historia de melena y síndrome anémico en el que se encontró un GIST ulcerado en la tercera porción del duodeno con respuesta favorable al tratamiento médico y quirúrgico.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Gastrointestinal stromal tumors (GIST) constitute most mesenchymal tumors of the gastrointestinal tract, only 5% can be found in the duodenum. Advances in the last 30 years in the field of molecular medicine, genetics, and immunohistochemistry have enabled to better identify this subgroup of tumors and facilitate specific treatment. We present the case of a 61-year-old male with melena and anemic syndrome in which an ulcerated GIST was found in the third portion of the duodenum with a favorable response to medical and surgical treatment.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Tumor del estroma gastrointestinal]]></kwd>
<kwd lng="es"><![CDATA[Hemorragia gastrointestinal]]></kwd>
<kwd lng="es"><![CDATA[Tumores duodenales]]></kwd>
<kwd lng="en"><![CDATA[Gastrointestinal stromal tumor]]></kwd>
<kwd lng="en"><![CDATA[Gastrointestinal hemorrhage]]></kwd>
<kwd lng="en"><![CDATA[Duodenal neoplasms]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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