<?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>2444-054X</journal-id>
<journal-title><![CDATA[Cirugía y cirujanos]]></journal-title>
<abbrev-journal-title><![CDATA[Cir. cir.]]></abbrev-journal-title>
<issn>2444-054X</issn>
<publisher>
<publisher-name><![CDATA[Academia Mexicana de Cirugía A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2444-054X2021000700010</article-id>
<article-id pub-id-type="doi">10.24875/ciru.20000786</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Hemorragia gastrointestinal como primera manifestación de coriocarcinoma metastásico en un paciente masculino]]></article-title>
<article-title xml:lang="en"><![CDATA[Gastrointestinal hemorrhage as the first manifestation of metastatic choriocarcinoma in a male patient]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Reyes-Ramírez]]></surname>
<given-names><![CDATA[Uriel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Estrada-González]]></surname>
<given-names><![CDATA[Hugo Enrique]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cruz-Santiago]]></surname>
<given-names><![CDATA[José]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Peñavera-Hernández]]></surname>
<given-names><![CDATA[José Rafael]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gutiérrez-Muñiz]]></surname>
<given-names><![CDATA[Gabriela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pinto-Angulo]]></surname>
<given-names><![CDATA[Víctor Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital Juárez de México Servicio de Cirugía General ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Hospital Juárez de México Servicio de Anatomía Patológica ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></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>89</volume>
<fpage>10</fpage>
<lpage>13</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2444-054X2021000700010&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2444-054X2021000700010&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2444-054X2021000700010&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción: El coriocarcinoma es un tumor maligno, más frecuente en el sexo femenino, raramente reportado en el sexo masculino.  Caso clínico: Varón de 19 años que ingresa con hematoquecia y evacuaciones melénicas. Se realiza panendoscopia y colonoscopia, sin documentar el sitio de sangrado. Se realiza laparotomía exploradora y se encuentra una lesión tumoral en el yeyuno, cuyo examen histopatológico reportó coriocarcinoma.  Conclusiones: La hemorragia de tubo digestivo como presentación de un coriocarcinoma es en ocasiones el único síntoma que muestra un paciente. El coriocarcinoma metastásico al tracto gastrointestinal es raro, lo que hace que la sospecha diagnóstica sea pobre.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction: Choriocarcinoma is a malignant tumor, it is more frequent in the female sex, rarely reported in the male sex.  Clinical case: A 19-year-old male patient who was admitted with hematochezia and melenic evacuations, panendoscopy and colonoscopy were performed without documenting the bleeding site, exploratory laparotomy was performed finding tumor lesion in the jejunum, the histopathological examination reported Choriocarcinoma.  Conclusions: Gastrointestinal bleeding as a presentation of choriocarcinoma is sometimes the only symptom that the patient presents. Metastatic choriocarcinoma to the gastrointestinal tract is rare, which makes the suspected diagnosis poor.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Hemorragia gastrointestinal]]></kwd>
<kwd lng="es"><![CDATA[Coriocarcinoma]]></kwd>
<kwd lng="es"><![CDATA[Masculino]]></kwd>
<kwd lng="es"><![CDATA[Intestino delgado]]></kwd>
<kwd lng="es"><![CDATA[Metástasis]]></kwd>
<kwd lng="en"><![CDATA[Gastrointestinal bleeding]]></kwd>
<kwd lng="en"><![CDATA[Choriocarcinoma]]></kwd>
<kwd lng="en"><![CDATA[Male]]></kwd>
<kwd lng="en"><![CDATA[Small intestine]]></kwd>
<kwd lng="en"><![CDATA[Metastasis]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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