<?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>S2565-005X2023000500032</article-id>
<article-id pub-id-type="doi">10.24875/j.gamo.22000071</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Presentación inusual de adenocarcinoma gástrico en pacientes pediátricos: reporte de un caso]]></article-title>
<article-title xml:lang="en"><![CDATA[Unusual presentation of gastric adenocarcinoma in pediatric patients: a case report]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Anda-Coronado]]></surname>
<given-names><![CDATA[Alberto de]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Treviño-Arizmendi]]></surname>
<given-names><![CDATA[César J.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Elizondo-Jasso]]></surname>
<given-names><![CDATA[José H.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Muñoz-Maldonado]]></surname>
<given-names><![CDATA[Gerardo E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lozano]]></surname>
<given-names><![CDATA[Marco A. Treviño]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ortiz-Meza]]></surname>
<given-names><![CDATA[Itzel A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Nuevo León Hospital Universitario Dr. José E. González Servicio de Cirugía, Departamento de Cirugía General]]></institution>
<addr-line><![CDATA[Monterrey N.L]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de Nuevo León Hospital Universitario Dr. José E. González Departamento de Anatomía Patológica y Citopatología]]></institution>
<addr-line><![CDATA[Monterrey N.L]]></addr-line>
<country>México</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Autónoma de Nuevo León Hospital Universitario Dr. José E. González Servicio de Cirugía Oncológica]]></institution>
<addr-line><![CDATA[Monterrey N.L]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2023</year>
</pub-date>
<volume>22</volume>
<fpage>32</fpage>
<lpage>35</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2565-005X2023000500032&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2565-005X2023000500032&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2565-005X2023000500032&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Los tumores malignos del tracto gastrointestinal son raros en la edad pediátrica. El adenocarcinoma gástrico es extremadamente raro y comprende un 0.05% de los tumores gastrointestinales malignos. Presentamos el primer caso de adenocarcinoma gástrico en un paciente pediátrico reportado en México. El paciente fue sometido a gastrectomía total + esófago-yeyuno-anastomosis, posterior a recibir terapia neoadyuvante, teniendo una evolución favorable. A pesar de la baja frecuencia con que se presentan estas entidades, es responsabilidad del médico de primer contacto sospechar en pacientes con cuadros que incluyan dolor abdominal de larga evolución, asociado a melena o sangrado del tubo digestivo.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Malignant tumors of the gastrointestinal tract are rare in pediatric patients. Gastric adenocarcinoma is extremely rare and represents 0.05% of malignant gastrointestinal tumors. We present the first case of gastric adenocarcinoma in a pediatric patient reported in Mexico. He underwent total gastrectomy + esophageal jejunal anastomosis after receiving neoadjuvant therapy. The patient was discharged with a favorable evolution. Despite the low frequency of these entities, it is the responsibility of the first contact physician to be suspicious, especially in patients with non-specific abdominal pain of long evolution, associated with melena or digestive tract bleeding.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Gastrectomía]]></kwd>
<kwd lng="es"><![CDATA[Pediatría]]></kwd>
<kwd lng="es"><![CDATA[Cirugía oncológica]]></kwd>
<kwd lng="es"><![CDATA[Adenocarcinoma gástrico]]></kwd>
<kwd lng="es"><![CDATA[Adolescente]]></kwd>
<kwd lng="en"><![CDATA[Gastrectomy]]></kwd>
<kwd lng="en"><![CDATA[Pediatry]]></kwd>
<kwd lng="en"><![CDATA[Surgical oncology]]></kwd>
<kwd lng="en"><![CDATA[Gastric adenocarcinoma]]></kwd>
<kwd lng="en"><![CDATA[Adolescent]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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