<?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>1561-3194</journal-id>
<journal-title><![CDATA[Revista de Ciencias Médicas de Pinar del Río]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Ciencias Médicas]]></abbrev-journal-title>
<issn>1561-3194</issn>
<publisher>
<publisher-name><![CDATA[Editorial Ciencias Médicas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1561-31942021000300021</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Carcinoma renal de células claras con diferenciación sarcomatoide]]></article-title>
<article-title xml:lang="en"><![CDATA[Clear cell type renal carcinoma with sarcomatoid differentiation]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Almeida Esquivel]]></surname>
<given-names><![CDATA[Yudelky]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Piñón García]]></surname>
<given-names><![CDATA[Karell]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[De Zayas Pelegrín]]></surname>
<given-names><![CDATA[Lorenzo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Ciencias Médicas de Camagüey Hospital Universitario Manuel Ascunce Domenech ]]></institution>
<addr-line><![CDATA[Camagüey ]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<volume>25</volume>
<numero>3</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S1561-31942021000300021&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S1561-31942021000300021&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S1561-31942021000300021&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción:  el carcinoma renal de células claras con diferenciación sarcomatoide es un tumor infrecuente.  Objetivo:  reportar el diagnóstico de un carcinoma renal de células claras con diferenciación sarcomatoide.  Presentación del caso:  se trata de un hombre de 59 años de edad, fumador inveterado, quien asistió a consulta por dolor lumbar y hematuria. Los estudios de imagen mostraron una lesión tumoral en riñón derecho. Se indicó tratamiento quirúrgico y el estudio histopatológico informó un carcinoma renal de células claras con diferenciación sarcomatoide. Recibió quimioterapia y se mantiene actualmente en seguimiento por Oncología.  Conclusiones:  el carcinoma renal de células claras con diferenciación sarcomatoide es infrecuente. El tratamiento de elección es quirúrgico y el estudio anatomopatológico confirma el diagnóstico certero.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ ABSTRACT  Introduction:  clear cell type renal carcinoma with sarcomatoid differentiation is a rare tumor.  Objective:  to report the diagnosis of a clear cell type renal carcinoma with sarcomatoid differentiation.  Case report:  a 59-year-old, heavy smoker male patient, attending to the doctor&#8217;s office presenting lumbar pain and hematuria. The imaging studies showed a tumor lesion in the right kidney. Surgical treatment was indicated and the histopathological study reported a clear cell type renal carcinoma with sarcomatoid differentiation. The patient underwent chemotherapy and at present he maintains oncological follow-up.  Conclusions:  clear cell type renal carcinoma with sarcomatoid differentiation is rare. The treatment of election is surgery and pathology report confirms the true diagnosis.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[CARCINOMA]]></kwd>
<kwd lng="es"><![CDATA[NEOPLASIAS RENALES]]></kwd>
<kwd lng="es"><![CDATA[CÉLULAS]]></kwd>
<kwd lng="es"><![CDATA[BIOPSIA /PATOLOGÍA]]></kwd>
<kwd lng="es"><![CDATA[RIÑÓN]]></kwd>
<kwd lng="en"><![CDATA[CARCINOMA]]></kwd>
<kwd lng="en"><![CDATA[KIDNEY NEOPLASMS]]></kwd>
<kwd lng="en"><![CDATA[CELLS]]></kwd>
<kwd lng="en"><![CDATA[BIOPSY/PATHOLOGY]]></kwd>
<kwd lng="en"><![CDATA[KIDNEY]]></kwd>
</kwd-group>
</article-meta>
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