<?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>S2565-005X2025000500067</article-id>
<article-id pub-id-type="doi">10.24875/j.gamo.25000038</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Carcinoma de células de Merkel, variante agresiva del cáncer de piel: reporte de un caso]]></article-title>
<article-title xml:lang="en"><![CDATA[Merkel cell carcinoma, an aggressive variant of skin cancer: 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[Herrera-Contreras]]></surname>
<given-names><![CDATA[Karen T.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gutiérrez-González]]></surname>
<given-names><![CDATA[Juan P.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Meza-Gómez]]></surname>
<given-names><![CDATA[Luis A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez-de-León]]></surname>
<given-names><![CDATA[Gloria B.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital de Especialidades No. 1, IMSS Centro Médico Nacional del Bajío Departamento de Cirugía Oncológica]]></institution>
<addr-line><![CDATA[Gto ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Hospital de Especialidades No. 1, IMSS Centro Médico Nacional del Bajío Departamento de Patología]]></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>67</fpage>
<lpage>70</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2565-005X2025000500067&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2565-005X2025000500067&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2565-005X2025000500067&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El carcinoma de células de Merkel es una neoplasia neuroendocrina cutánea poco frecuente. Es uno de los cánceres de piel más agresivos y su incidencia está aumentando de forma drástica (esto puede deberse al descubrimiento de biomarcadores que mejoran la detección de la enfermedad). Describimos el caso de una paciente con carcinoma de células de Merkel en región glútea izquierda con afectación clínica significativa de ganglios de región inguinal ipsilateral, la cual fue llevada a una intervención quirúrgica eficaz y oportuna con adecuados resultados.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Merkel cell carcinoma is a rare cutaneous neuroendocrine neoplasm. It is one of the most aggressive skin cancers, and its incidence is increasing dramatically (this may be due to the discovery of biomarkers that improve disease detection). We describe the case of a patient with Merkel cell carcinoma of the left gluteal region with clinically significant involvement of lymph nodes in the ipsilateral inguinal region. She underwent timely and effective surgery, with satisfactory results.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Carcinoma de células de Merkel]]></kwd>
<kwd lng="es"><![CDATA[Cáncer de piel]]></kwd>
<kwd lng="es"><![CDATA[Reporte de caso]]></kwd>
<kwd lng="es"><![CDATA[Resección amplia]]></kwd>
<kwd lng="es"><![CDATA[Tumor neuroendocrino]]></kwd>
<kwd lng="en"><![CDATA[Merkel cell carcinoma]]></kwd>
<kwd lng="en"><![CDATA[Skin cancer]]></kwd>
<kwd lng="en"><![CDATA[Case report]]></kwd>
<kwd lng="en"><![CDATA[Wide resection]]></kwd>
<kwd lng="en"><![CDATA[Neuroendocrine tumor]]></kwd>
</kwd-group>
</article-meta>
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