<?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>2007-4085</journal-id>
<journal-title><![CDATA[Revista mexicana de urología]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. urol.]]></abbrev-journal-title>
<issn>2007-4085</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Urología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-40852023000600004</article-id>
<article-id pub-id-type="doi">10.48193/bey0w687</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Tumor papilar renal de células claras bifocal no asociado a enfermedad renal terminal]]></article-title>
<article-title xml:lang="en"><![CDATA[Bifocal clear cell papillary renal cell tumor not associated with end-stage renal disease]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cabrera-Zavala]]></surname>
<given-names><![CDATA[Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Soria-Céspedes]]></surname>
<given-names><![CDATA[Danny]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arce-Alcázar]]></surname>
<given-names><![CDATA[Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro Médico ABC  ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2023</year>
</pub-date>
<volume>83</volume>
<numero>6</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-40852023000600004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-40852023000600004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-40852023000600004&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Descripción del caso:  Hombre de 63 años con síntomas gastrointestinales sin historia de enfermedad renal. A través de un de estudio tomografía axial computarizada de abdomen se identificaron dos lesiones en riñón derecho que fueron resecadas. Morfológicamente ambas lesiones mostraron patrón papilar con características de células claras, bajo grado y estroma fibromuscular. Por inmunohistoquímica la citoqueratina 7, citoqueratina 34&#946;E12, anhidrasa carbónica IX, PAX8, parafibromina y vimentina fueron positivos, mientras que CD10, AMARC, RCC, TFE3 fueron negativos.  Implicaciones clínicas:  El tumor papilar renal de células claras (TPRCC) es una entidad reconocida que tiene características morfológicas e inmunohistoquímicas únicas con comportamiento clínico indolente sin recurrencias, metástasis o afección ganglionar linfática. Inicialmente se describió en asociación a enfermedad renal terminal, sin embargo, casos esporádicos han sido descritos en pacientes sin enfermedad renal. Es importante la correcta diferenciación de otros subtipos de tumores de peor pronóstico.  Relevancia:  TPRCC previamente denominado carcinoma ha cambiado su nombre en la última publicación de la OMS (2022) debido a la ausencia de casos con metástasis o recurrencia, es una neoplasia indolente que debe ser diferenciada de otros tumores más agresivos.  Conclusiones:  El TPRCC puede ocurrir en pacientes sin historia de enfermedad renal, tiene excelente pronóstico, la nefrectomía parcial o total es el tratamiento de elección. El patólogo debe diferenciarlo de otros tumores de células renales más agresivos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Clinical case description:  A 63-year-old man with gastrointestinal symptoms without history of kidney disease. Through an abdominal computed axial tomography study, two lesions were detected in the right kidney that were resected. By morphology both lesions showed papillary pattern with clear cell features, low grade and fibromuscular stroma. By immunohistochemistry cytokeratin 7, cytokeratin 34&#946;E12, carbonic anhydrase IX, PAX8, parafibromin and vimentin were positive, while CD10, AMARC, RCC, TFE3 were negative.  Clinical implications:  Clear cell papillary renal cell tumor (CCPRCT) is a recognized entity that has a unique morphologic and immunohistochemical features with an indolent clinical behavior with no recurrences, metastases or lymph node involvement. It was initially described in conjunction with end-stage renal disease; however, sporadic cases have been described in patients without kidney disease. It is important to correctly differentiate from other subtypes with worse prognosis.  Relevance:  CCPRCT previously called carcinoma has changed its name in the latest WHO publication (2022) due to the absence of cases with metastasis or recurrence, it is an indolent neoplasm that must be differentiated from other more aggressive tumors.  Conclusions:  CCPRCT can occur in patients without history of renal disease, it has an excellent prognosis, partial or total nephrectomy is the treatment of choice. The pathologist must differentiate it from other renal cell tumors with more aggressive behavior.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Clear cell papillary renal cell tumor]]></kwd>
<kwd lng="en"><![CDATA[end-stage kidney disease]]></kwd>
<kwd lng="en"><![CDATA[immunohistochemistry]]></kwd>
<kwd lng="es"><![CDATA[Tumor papilar renal de células claras]]></kwd>
<kwd lng="es"><![CDATA[enfermedad renal terminal]]></kwd>
<kwd lng="es"><![CDATA[inmunohistoquímica]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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