<?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>2565-005X</journal-id>
<journal-title><![CDATA[Gaceta mexicana de oncología]]></journal-title>
<abbrev-journal-title><![CDATA[Gac. mex. oncol.]]></abbrev-journal-title>
<issn>2565-005X</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Oncología A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2565-005X2021000500147</article-id>
<article-id pub-id-type="doi">10.24875/j.gamo.20000176</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Sangrado de tubo digestivo secundario a carcinoma neuroendocrino: presentación de caso y revisión]]></article-title>
<article-title xml:lang="en"><![CDATA[Bleeding of digestive tube secondary to neuroendocrine carcinoma: case presentation and review]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez-Faurrieta]]></surname>
<given-names><![CDATA[Iván]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Garduño-Valdez]]></surname>
<given-names><![CDATA[Ramón]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Quiterio-Ramírez]]></surname>
<given-names><![CDATA[Karime]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez-Lozada]]></surname>
<given-names><![CDATA[Alvaro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López-Cárdenas]]></surname>
<given-names><![CDATA[Yeshua B.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro Médico ISSEMYM Lic. Arturo Montiel Rojas Departamento de Cirugía ]]></institution>
<addr-line><![CDATA[Toluca Edo]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<volume>20</volume>
<fpage>147</fpage>
<lpage>150</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2565-005X2021000500147&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2565-005X2021000500147&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2565-005X2021000500147&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Los tumores neuroendocrinos son neoplasias heterogéneas que surgen en células secretoras del sistema difuso neuroendocrino. La incidencia es de 5.86/100,000 por año, se realiza la presentación de un caso de paciente de sexo femenino de 67 años con aparente sangrado de tubo digestivo de origen desconocido acompañándose de pérdida de peso y anemia crónica. Se realiza manejo quirúrgico mediante laparotomía exploradora, encontrando tumoración de intestino delgado a nivel de yeyuno, con estudio histopatológico reportando carcinoma neuroendocrino. El objetivo del presente trabajo es identificar una de las múltiples presentaciones de pacientes con tumores neuroendocrinos del intestino delgado.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Neuroendocrine tumors are heterogeneous neoplasms that arise in secretory cells of the diffuse neuroendocrine system. The incidence is 5.86/100,000 per year, a case of a 67-year-old female patient is presented with apparent bleeding from the digestive tract of unknown origin accompanied by weight loss, and chronic anemia. Surgical management is performed by exploratory laparotomy, finding a tumor of the small intestine at the jejunum level, with histopathological study reporting neuroendocrine carcinoma. The aim of this work is to identify one of the multiple presentations of patients with neuroendocrine tumors of the small intestine.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Sangrado]]></kwd>
<kwd lng="es"><![CDATA[Carcinoma]]></kwd>
<kwd lng="es"><![CDATA[Neuroendocrino]]></kwd>
<kwd lng="es"><![CDATA[Tumor]]></kwd>
<kwd lng="es"><![CDATA[Yeyuno]]></kwd>
<kwd lng="en"><![CDATA[Bleeding]]></kwd>
<kwd lng="en"><![CDATA[Carcinoma]]></kwd>
<kwd lng="en"><![CDATA[Neuroendocrine]]></kwd>
<kwd lng="en"><![CDATA[Tumor]]></kwd>
<kwd lng="en"><![CDATA[Jejunum]]></kwd>
</kwd-group>
</article-meta>
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