<?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>S2007-40852022000100009</article-id>
<article-id pub-id-type="doi">10.48193/revistamexicanadeurologa.v82i1.730</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Carcinoma renal de ductos colectores de Bellini: presentación de dos casos y revisión de la literatura]]></article-title>
<article-title xml:lang="en"><![CDATA[Bellini&#8217;s collecting duct renal carcinoma: report of two cases and review of the literature]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gutiérrez-Zurimendi]]></surname>
<given-names><![CDATA[Garazi]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García de Casasola-Rodríguez]]></surname>
<given-names><![CDATA[Gonzalo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Urrestizala-Peña]]></surname>
<given-names><![CDATA[Ibon]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aizcorbe-Gómez]]></surname>
<given-names><![CDATA[Mikel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Maldonado-De Sasia]]></surname>
<given-names><![CDATA[Asier]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Urresola-Olabarrieta]]></surname>
<given-names><![CDATA[Aranzazu]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital Universitario Cruces  ]]></institution>
<addr-line><![CDATA[Barakaldo Bizkaia]]></addr-line>
<country>España</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Hospital Universitario Galdakao  ]]></institution>
<addr-line><![CDATA[Galdakao Bizkaia]]></addr-line>
<country>España</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>02</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>02</month>
<year>2022</year>
</pub-date>
<volume>82</volume>
<numero>1</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-40852022000100009&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-40852022000100009&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-40852022000100009&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Descripción de casos clínicos:  Presentamos dos casos de carcinoma renal de ductos colectores, que se manifiestan como masas renales sospechosas de malignidad con realce del urotelio sin una apariencia radiológica determinante, diagnosticados a partir del análisis anatomo-patológico de la muestra. Correlacionamos la historia clínica con los hallazgos histológicos y realizamos revisión de la literatura.  Relevancia / Implicación clínica:  El carcinoma renal de ductos colectores de Bellini (CRDC) es una variante muy infrecuente y agresiva de tumor renal (menos del 1%) que suele diagnosticarse en estadios avanzados. El diagnóstico diferencial radiológico con otros tipos de masas renales no es sencillo, ya que no hay características patognomónicas que lo definan, por lo que ha de sospecharse ante lesiones renales de predominio medular con crecimiento infiltrativo que no deformen la silueta renal, y tratarlo lo antes posible mediante exéresis quirúrgica siempre que sea factible, en ocasiones asociada a quimioterapia adyuvante, aunque suele presentar una evolución desfavorable.  Conclusión:  Debido a su agresivo comportamiento, son imperativos un diagnóstico y tratamiento precoces, aunque pese a ello presenta un pronóstico infausto.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Clinical cases:  We present two cases of Bellini&#8217;s Collecting Duct Renal Carcinoma (CDRC) that appear as suspicious kidney masses with enhancement of the urotelium, without a determinant radiological appearance, diagnosed by anatomo-pathological analysis. We revise the medical history, histological findings and make a review of the literature.  Importance / Clinical implication:  Bellini&#8217;s collecting duct renal carcinoma is a very rare and aggressive type of kidney cancer (less than 1%), usually diagnosed at advanced stages. It does not present specific radiological characteristics, which makes necessary the histologic and inmunohistochemical analysis to confirm the diagnosis. We must suspect CDRC in infiltrative medular renal masses that do not affect kidney shape, and treat as soon as possible performing surgery, whenever feasible, normally associated with adjuvant chemotherapy. Nevertheless, it usually has an unfavourable evolution.  Conclusion:  It is imperative to diagnose and treat this kind of tumours as soon as possible due to its aggressiveness and fatal prognosis.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Bellini&#8217;s collecting duct renal carcinoma]]></kwd>
<kwd lng="en"><![CDATA[renal cancer]]></kwd>
<kwd lng="en"><![CDATA[urothelial cancer]]></kwd>
<kwd lng="en"><![CDATA[nephrectomy]]></kwd>
<kwd lng="en"><![CDATA[chemotherapy]]></kwd>
<kwd lng="es"><![CDATA[carcinoma renal de los ductos colectores de Bellini]]></kwd>
<kwd lng="es"><![CDATA[cáncer renal]]></kwd>
<kwd lng="es"><![CDATA[tumor urotelial]]></kwd>
<kwd lng="es"><![CDATA[nefrectomía]]></kwd>
<kwd lng="es"><![CDATA[quimioterapia]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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