<?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>S2565-005X2021000500079</article-id>
<article-id pub-id-type="doi">10.24875/j.gamo.20000175</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Feocromocitoma maligno metastásico extraadrenal con una diseminación atípica. Reporte de un caso]]></article-title>
<article-title xml:lang="en"><![CDATA[Extraadrenal metastatic malignant pheochromocytoma with atypical metastasis. Case report]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Carballo-Torres]]></surname>
<given-names><![CDATA[Daniel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Caballero-Aguirrechu]]></surname>
<given-names><![CDATA[Iraida]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ortiz-Roque]]></surname>
<given-names><![CDATA[Jorge]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sánchez-Rojas]]></surname>
<given-names><![CDATA[Irlis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Argote]]></surname>
<given-names><![CDATA[Javier]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital Hermanos Ameijeiras Servicio de Oncología Clínica ]]></institution>
<addr-line><![CDATA[La Habana ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Buenos Aires Facultad de Ciencias Exactas y Naturales IQUIBICEN CONICET-UBA]]></institution>
<addr-line><![CDATA[Buenos Aires ]]></addr-line>
<country>Argentina</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>20</volume>
<fpage>79</fpage>
<lpage>84</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2565-005X2021000500079&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2565-005X2021000500079&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2565-005X2021000500079&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El feocromocitoma es un tumor de células cromafines que se considera poco frecuente. Aproximadamente el 10% son malignos y el 90% benignos, su comportamiento está determinado por la invasión local y la presencia de metástasis a distancia. Se presenta un caso de feocromocitoma extraadrenal maligno con metástasis en el esternón y otras estructuras óseas, tras 29 años de una nefrectomía derecha por esta enfermedad, a nivel del cuerpo del 1.er hueso costal izquierdo y el cuerpo de la 2.a vértebra cervical, huesos de la bóveda craneana y la porción superior del esternón, evidenciando el comportamiento atípico y raro de diseminación.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Pheochromocytoma is a chromaffin cell tumor that is considered rare. Approximately 10% are malignant and 90% benign, their behavior is determined by local invasion and the presence of distant metastases. We present a case of malignant extraadrenal pheochromocytoma with metastases to the sternum and other bone structures, after 29 years of a right nephrectomy for this disease, at the level of the body of the 1st left rib bone and the body of the 2nd cervical vertebra, bones of the cranial vault and the upper portion of the sternum, evidencing the atypical and unusual behavior of dissemination.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Feocromocitoma]]></kwd>
<kwd lng="es"><![CDATA[Feocromocitoma maligno]]></kwd>
<kwd lng="es"><![CDATA[Metástasis vertebral]]></kwd>
<kwd lng="en"><![CDATA[Pheochromocytoma]]></kwd>
<kwd lng="en"><![CDATA[Malignant pheochromocytoma]]></kwd>
<kwd lng="en"><![CDATA[Vertebral metastasis]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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