<?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>2306-4102</journal-id>
<journal-title><![CDATA[Acta ortopédica mexicana]]></journal-title>
<abbrev-journal-title><![CDATA[Acta ortop. mex]]></abbrev-journal-title>
<issn>2306-4102</issn>
<publisher>
<publisher-name><![CDATA[Colegio Mexicano de Ortopedia y Traumatología A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2306-41022021000400300</article-id>
<article-id pub-id-type="doi">10.35366/103307</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Estado actual del condrosarcoma en un centro de referencia]]></article-title>
<article-title xml:lang="en"><![CDATA[Current status of chondrosarcoma in a reference center]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Clara-Altamirano]]></surname>
<given-names><![CDATA[MA]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-Ortega]]></surname>
<given-names><![CDATA[DY]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Núñez-González]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Caro-Sánchez]]></surname>
<given-names><![CDATA[CHS]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Espejo-Sánchez]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez-Said]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cuéllar-Hübbe]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Nacional de Cancerología Departamento de Piel y Partes Blandas ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Nacional de Cancerología Departamento de Piel y Partes Blandas ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Nacional de Rehabilitación  ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Instituto Nacional de Cancerología Departamento de Piel y Partes Blandas ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Hospital de Alta Especialidad de Veracruz  ]]></institution>
<addr-line><![CDATA[Veracruz ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af6">
<institution><![CDATA[,Instituto Nacional de Cancerología Departamento de Piel y Partes Blandas ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2021</year>
</pub-date>
<volume>35</volume>
<numero>4</numero>
<fpage>300</fpage>
<lpage>304</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2306-41022021000400300&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2306-41022021000400300&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2306-41022021000400300&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen:  Introducción:  El condrosarcoma es el segundo tumor óseo maligno primario más frecuente, se caracteriza por la formación de matriz condroide, es más común en edades avanzadas y su pronóstico guarda relación directa con el subtipo histológico y el grado tumoral. El objetivo de este artículo es presentar el perfil demográfico y de tratamiento en un centro de referencia.  Material y métodos:  Se realizó un estudio retrospectivo, descriptivo, observacional, analítico de tipo cohorte en un centro de referencia entre el 01 de Enero de 2005 y el 31 de Diciembre de 2019, se analizaron las variables demográficas y se contrastaron con las variables de desenlace que fueron supervivencia global y período libre de enfermedad.  Resultados:  Se incluyeron 85 pacientes, la media edad de presentación fue 43.3 años, la etapa clínica al momento de la presentación fue mayormente IIa y IIb abarcando 54.1%, 35 pacientes tuvieron metástasis con etapa clínica IV. El principal sitio de metástasis fue el pulmón en 32 pacientes (37.6%). De los pacientes, 36 (42.3%) presentaron mortalidad cáncer específica, 35 (41.2%) fallecieron como consecuencia de la enfermedad metastásica a pulmón u otros órganos y un paciente falleció por extensión directa del tumor en columna cervical.  Conclusión:  Los factores pronósticos importantes hallados en nuestra serie que influyen en la supervivencia global son: la presencia de metástasis y la localización axial.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract:  Introduction:  Chondrosarcoma is the second most frequent primary malignant bone tumor, is characterized by the formation of a chondroid matrix, is more frequent in advanced ages and its prognosis is directly related to the histological subtype and tumor grade. The objective of this article is to present the demographic and treatment profile in a reference center.  Material and methods:  A retrospective, descriptive, observational, analytical cohort-type study was conducted in a reference center between January 1, 2005 and December 31, 2019, the demographic variables were analyzed and contrasted with the outcome variables that were overall survival and disease-free period.  Results:  85 patients were included, the mean age of presentation was 43.3 years, the clinical stage at the time of presentation was mostly IIa and IIb covering 54.1%. 35 patients had metastases with clinical stage IV. The main site of metastasis was the lung in 32 patients (37.6%). Thirty-six patients (42.3%) had specific mortality. 35 patients (41.2%) died as a result of metastatic disease to lung or other organs, one patient died from direct extension of the tumor in the cervical spine.  Conclusion:  The important prognostic factors found in our series that influence global survival are: the presence of metastases and axial localization.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Condrosarcoma]]></kwd>
<kwd lng="es"><![CDATA[subtipo histológico]]></kwd>
<kwd lng="es"><![CDATA[metástasis]]></kwd>
<kwd lng="es"><![CDATA[revisión]]></kwd>
<kwd lng="en"><![CDATA[Chondrosarcoma]]></kwd>
<kwd lng="en"><![CDATA[histological subtype]]></kwd>
<kwd lng="en"><![CDATA[metastasis]]></kwd>
<kwd lng="en"><![CDATA[revision]]></kwd>
</kwd-group>
</article-meta>
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