<?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>S2565-005X2025000500001</article-id>
<article-id pub-id-type="doi">10.24875/j.gamo.24000021</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Liposarcoma retroperitoneal: reporte de caso]]></article-title>
<article-title xml:lang="en"><![CDATA[Retroperitoneal liposarcoma: case report]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Campo-Mena]]></surname>
<given-names><![CDATA[Enrique M. del]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Méndez-Torruco]]></surname>
<given-names><![CDATA[Mariana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro de Cancerología Estatal Dr. Miguel Dorantes Mesa, Secretaría de Salud del Estado de Veracruz Departamento de Oncocirugía ]]></institution>
<addr-line><![CDATA[Xalapa ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2025</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2025</year>
</pub-date>
<volume>24</volume>
<fpage>1</fpage>
<lpage>5</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2565-005X2025000500001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2565-005X2025000500001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2565-005X2025000500001&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El liposarcoma representa el 45% de los sarcomas retroperitoneales. Su crecimiento provoca infiltración a órganos contiguos, siendo el riñón el mayormente afectado. Presentamos el caso de una paciente de 42 años con diagnóstico de liposarcoma retroperitoneal confirmado por patología, quien presenta pérdida significativa de peso y aumento marcado del perímetro abdominal, sometida a laparotomía exploradora con resección amplia de liposarcoma de retroperitoneo con involucro de estructuras abdominales izquierdas: bazo, cuerpo y cola de páncreas, riñón y hemicolon izquierdo respetando estructuras vasculares adyacentes. Se considera la importancia de documentar este caso por las dimensiones e involucro del tumor, así como el abordaje seleccionado.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Liposarcoma represents 45% of retroperitoneal sarcomas. Its growth causes infiltration to adjacent organs, with the kidney being mostly affected. We present the case of a 42-year-old female patient with diagnosis of retroperitoneal liposarcoma confirmed by pathology, who presented significant weight loss and marked increase in abdominal perimeter, underwent exploratory laparotomy with wide resection of liposarcoma of the retroperitoneum with involvement of left abdominal structures: spleen, body and tail of pancreas, kidney and left hemicolon respecting adjacent vascular structures. The importance of documenting this case is considered due to the dimensions and involvement of the tumor, as well as the selected approach.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Liposarcoma]]></kwd>
<kwd lng="es"><![CDATA[Retroperitoneo]]></kwd>
<kwd lng="es"><![CDATA[Malignidad]]></kwd>
<kwd lng="es"><![CDATA[Reporte de caso]]></kwd>
<kwd lng="en"><![CDATA[Liposarcoma]]></kwd>
<kwd lng="en"><![CDATA[Retroperitoneum]]></kwd>
<kwd lng="en"><![CDATA[Malignancy]]></kwd>
<kwd lng="en"><![CDATA[Case report]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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