<?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>1870-7203</journal-id>
<journal-title><![CDATA[Acta médica Grupo Ángeles]]></journal-title>
<abbrev-journal-title><![CDATA[Acta méd. Grupo Ángeles]]></abbrev-journal-title>
<issn>1870-7203</issn>
<publisher>
<publisher-name><![CDATA[Grupo Ángeles, Servicios de Salud]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1870-72032018000100023</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Estudio retrospectivo de la incidencia de sarcomas en un hospital general privado de la Ciudad de México]]></article-title>
<article-title xml:lang="en"><![CDATA[Retrospective study of the incidence of sarcomas in a private general hospital in Mexico City]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Maza-Astiazarán]]></surname>
<given-names><![CDATA[Carlos de la]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Vergara]]></surname>
<given-names><![CDATA[Carolina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bieletto-Trejo]]></surname>
<given-names><![CDATA[Olivia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad La Salle Facultad Mexicana de Medicina ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Hospital Ángeles Mocel  ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Hospital Ángeles Mocel Departamento de Anatomía Patológica ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2018</year>
</pub-date>
<volume>16</volume>
<numero>1</numero>
<fpage>23</fpage>
<lpage>27</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-72032018000100023&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-72032018000100023&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-72032018000100023&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: Los sarcomas son un grupo amplio y heterogéneo de neoplasias que tienen su origen en las células mesenquimales. La clasificación más grande de éstas la constituyen los sarcomas dependientes de tejidos blandos y los tumores óseos malignos que se originan de hueso y cartílago (osteosarcoma y condrosarcoma). Los sarcomas en general pueden localizarse en cualquier parte del cuerpo, pero tienen como lugar predilecto las extremidades, siendo las inferiores las más comunes. La estirpe histopatológica que se observa con más frecuencia en adultos es el liposarcoma, mientras que en pacientes pediátricos por lo regular son dependientes de hueso, ya sea osteosarcoma o el sarcoma de Ewing. Debido a la ausencia de síntomas que éstos producen, por lo general son diagnosticados en etapas avanzadas y hasta en 10% de los casos con metástasis. En este artículo se presenta la incidencia de sarcomas en un estudio retrospectivo de 11,348 muestras enviadas al Departamento de Patología del Hospital Ángeles Mocel (CDMX) en un periodo de tres años y medio, donde se realizó una comparación de los resultados obtenidos con los de la literatura mundial.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: Sarcomas are a large and heterogeneous group of diseases which origin arises in mesenchymal cells. There is a wider classification of sarcomas which divides the soft tissue dependent sarcomas and malignant bone tumors witch are originated from bone and cartilage (osteosarcoma and condrosarcoma). Sarcomas can occur anywhere in the body because of connective tissue, preferently in extremities (most of all lower). The type most often seen in adults is liposarcoma, while in pediatric patients are mainly dependent on bone, either osteosarcoma or Ewing&#8217;s sarcoma. Due to the lack of symptoms, they are usually diagnosed at advanced stages and as much as 10% of cases with metastasis. In this article we present the incidence of sarcomas in a retrospective study in 11,348 samples that were sent to the pathology department in a period of three and a half years in Ángeles Mocel Hospital (Mexico City), making a comparison between the obtained results with international literature.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Sarcomas]]></kwd>
<kwd lng="es"><![CDATA[sarcomas de tejidos blandos]]></kwd>
<kwd lng="es"><![CDATA[sarcomas óseos]]></kwd>
<kwd lng="en"><![CDATA[Sarcomas]]></kwd>
<kwd lng="en"><![CDATA[soft tissue sarcomas]]></kwd>
<kwd lng="en"><![CDATA[bone sarcomas]]></kwd>
</kwd-group>
</article-meta>
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