<?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>S2565-005X2025000500101</article-id>
<article-id pub-id-type="doi">10.24875/j.gamo.25000056</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Rabdomiosarcoma paratesticular con recurrencia retroperitoneal: reporte de un caso]]></article-title>
<article-title xml:lang="en"><![CDATA[Paratesticular rhabdomyosarcoma with retroperitoneal recurrence: a case report]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Méndez-Sánchez]]></surname>
<given-names><![CDATA[Jorge E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valtierra-Robles]]></surname>
<given-names><![CDATA[Eduardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro Médico Nacional del Bajío, IMSS Hospital de Especialidades No. 1 Departamento de Cirugía Oncológica]]></institution>
<addr-line><![CDATA[Gto ]]></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>101</fpage>
<lpage>104</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2565-005X2025000500101&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2565-005X2025000500101&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2565-005X2025000500101&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Los sarcomas paratesticulares son tumores malignos raros que se originan en los tejidos blandos que rodean el testículo. Es menos común en adultos y representa entre el 2 y el 5% de todos los sarcomas de tejidos blandos. Describimos el caso de un paciente con rabdomiosarcoma paratesticular con recurrencia retroperitoneal, específicamente hacia topografía de riñón izquierdo con afectación de uréter, el cual fue llevado a una intervención quirúrgica al detectar la recurrencia, sin embargo, encontrando sarcomatosis al momento de la cirugía, por lo que el objetivo es describir el comportamiento agresivo de este tipo de sarcomas y su pronóstico acometedor.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Paratesticular sarcomas are rare malignant tumors that originate in the soft tissues surrounding the testicle. They are less common in adults, representing between 2 and 5% of all soft tissue sarcomas. We describe the case of a patient with paratesticular rhabdomyosarcoma with retroperitoneal recurrence, specifically in the topography of the left kidney with ureter involvement. The patient underwent surgery upon detection of recurrence, however, sarcomatosis was found at the time of surgery. The objective is to describe the aggressive behavior of this type of sarcoma and its poor prognosis.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Rabdomiosarcoma]]></kwd>
<kwd lng="es"><![CDATA[Sarcoma de tejidos blandos]]></kwd>
<kwd lng="es"><![CDATA[Reporte de caso]]></kwd>
<kwd lng="es"><![CDATA[Recurrencia]]></kwd>
<kwd lng="en"><![CDATA[Rhabdomyosarcoma]]></kwd>
<kwd lng="en"><![CDATA[Soft tissue sarcoma]]></kwd>
<kwd lng="en"><![CDATA[Case report]]></kwd>
<kwd lng="en"><![CDATA[Recurrence]]></kwd>
</kwd-group>
</article-meta>
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