<?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>1405-0099</journal-id>
<journal-title><![CDATA[Cirujano general]]></journal-title>
<abbrev-journal-title><![CDATA[Cir. gen]]></abbrev-journal-title>
<issn>1405-0099</issn>
<publisher>
<publisher-name><![CDATA[Asociación Mexicana de Cirugía General A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1405-00992015000200099</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Tumor del estroma gastrointestinal como causa de hemorragia del tubo digestivo: presentación de un caso]]></article-title>
<article-title xml:lang="en"><![CDATA[Gastrointestinal stromal tumor as a cause of gastrointestinal bleeding: presentation of a case]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López-Valdés]]></surname>
<given-names><![CDATA[Julio César]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Nava-Gutiérrez]]></surname>
<given-names><![CDATA[Willy]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Astaburuaga-Gómez]]></surname>
<given-names><![CDATA[Alejandra]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez-Perales]]></surname>
<given-names><![CDATA[Jaime Eduardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto de Seguridad y Servicios Sociales de los Trabajadores del Estado  ]]></institution>
<addr-line><![CDATA[DF ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de Tamaulipas Facultad de Medicina de Tampico &#8220;Dr. Alberto Romo Caballero&#8221; ]]></institution>
<addr-line><![CDATA[Tampico Tamaulipas]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Asociación Mexicana de Cirugía General  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2015</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2015</year>
</pub-date>
<volume>37</volume>
<numero>3-4</numero>
<fpage>99</fpage>
<lpage>104</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-00992015000200099&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-00992015000200099&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-00992015000200099&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen:  Introducción:  Los tumores del estroma gastrointestinal se ubican entre las neoplasias mesenquimales más frecuentes del aparato gastrointestinal; representan del 0.1-3% del total. Sus principales localizaciones son el estómago y el intestino delgado (70-90%). La mayoría de estos tumores son asintomáticos; su diagnóstico generalmente es incidental. Sin embargo, en algunos casos su principal manifestación es la hemorragia del tubo digestivo en forma de hematemesis, muchas veces considerada como &#8220;de origen desconocido&#8221;.  Descripción del caso: Varón de 55 años con antecedentes de diabetes mellitus tipo 2 e hipertensión arterial, con historia de enfermedad por reflujo gastroesofágico y gastritis, que acude al servicio de urgencias por dolor abdominal difuso, plenitud postprandial y varios episodios de hematemesis. Los análisis de laboratorio arrojaron los siguientes datos: hemoglobina 9.3 g/dL, hematocrito 28.5%, plaquetas 324 × 103, leucocitos 11.5 × 103, glucosa 183 mg/dL, creatinina 1.1 mg/dL, albúmina 4.4 g/dL. La gastroscopia y la tomografía contrastada revelaron una masa subepitelial de bordes definidos localizada en la curvatura mayor del cuerpo del estómago, de cinco cm de diámetro, con datos sugestivos de ulceración. Se realizó una resección de la misma con márgenes libres acompañada de terapia inmunomoduladora a base de imatinib. Se logró la remisión total año y medio después de iniciado el tratamiento]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract:  Introduction: Gastrointestinal stromal tumors are the most frequent mesenchymal neoplasms of the gastrointestinal tract, representing 0.1 to 3% of all gastrointestinal neoplasms. These tumors are mainly located in the stomach and small intestine (70 to 90%). Most of them are asymptomatic and are mostly incidental findings. However, there is a group of cases in which the main manifestation is gastrointestinal bleeding (hematemesis), which is often regarded as being &#8216;&#8216;of unknown origin&#8217;&#8217;.  Case description:  A 55-year old male, with a medical history of type 2 diabetes and arterial hypertension, gastro-oesophageal reflux disease and gastritis. He was seen in the hospital with diffuse abdominal pain, postprandial fullness, and episodes of hematemesis. Laboratory findings showed, hemoglobin 9.3 g/dL, hematocrit 28.5%, platelets 324 × 103, white cells 11.5 × 103, glucose 183 mg/dL, creatinine 1.1 mg/dL, and albumin 4.4 g/dL. Contrasted CT and gastroscopy revealed a sub-epithelial mass with defined borders located on the greater curvature of the gastric body, 5-6 cm in diameter, and signs suggestive of ulceration. R0 resection was performed accompanied by immunomodulatory therapy with imatinib, bringing the total remission a year and a half after starting treatment.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Tumor del estroma gástrico]]></kwd>
<kwd lng="es"><![CDATA[hematemesis]]></kwd>
<kwd lng="es"><![CDATA[sangrado del tubo digestivo]]></kwd>
<kwd lng="es"><![CDATA[imatinib]]></kwd>
<kwd lng="en"><![CDATA[Gastric stromal tumor]]></kwd>
<kwd lng="en"><![CDATA[hematemesis]]></kwd>
<kwd lng="en"><![CDATA[gastrointestinal bleeding]]></kwd>
<kwd lng="en"><![CDATA[imatinib]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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