<?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>0186-4866</journal-id>
<journal-title><![CDATA[Medicina interna de México]]></journal-title>
<abbrev-journal-title><![CDATA[Med. interna Méx.]]></abbrev-journal-title>
<issn>0186-4866</issn>
<publisher>
<publisher-name><![CDATA[Edición y Farmacia S.A. de C.V.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0186-48662017000200246</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Carcinoma nasofaríngeo: conducta del médico internista ante un caso de adenopatía cervical con sospecha de malignidad]]></article-title>
<article-title xml:lang="en"><![CDATA[Nasopharyngeal carcinoma: behavior of internist facing a case of cervical lymphadenopathy with suspected malignancy]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bautista-López]]></surname>
<given-names><![CDATA[FJ]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Segura-González]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Medina-Escobedo]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Paredes-Casanova]]></surname>
<given-names><![CDATA[DC]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital General Regional núm. 1  ]]></institution>
<addr-line><![CDATA[Mérida Yucatán]]></addr-line>
</aff>
<aff id="Af2">
<institution><![CDATA[,Hospital General Regional núm. 1 Departamento de Oncología Médica ]]></institution>
<addr-line><![CDATA[Mérida Yucatán]]></addr-line>
</aff>
<aff id="Af3">
<institution><![CDATA[,Hospital General Regional núm. 1 Departamento de Anatomía Patológica ]]></institution>
<addr-line><![CDATA[Mérida Yucatán]]></addr-line>
</aff>
<aff id="Af4">
<institution><![CDATA[,Hospital General Regional núm. 1  ]]></institution>
<addr-line><![CDATA[Mérida Yucatán]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2017</year>
</pub-date>
<volume>33</volume>
<numero>2</numero>
<fpage>246</fpage>
<lpage>253</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0186-48662017000200246&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0186-48662017000200246&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0186-48662017000200246&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El carcinoma nasofaríngeo es un tumor de células escamosas que comúnmente aparece alrededor del ostium de la trompa de Eustaquio en la pared lateral de la nasofaringe. En términos generales, es una causa rara de cáncer en el mundo, aunque llega a ser muy frecuente en países del sureste de Asia y en Alaska. En México, el carcinoma nasofaríngeo no figura entre las 20 principales causas de cáncer. Esta neoplasia se ha relacionado con el virus Epstein-Barr, pero en su aparición también intervienen factores genéticos, raciales, ambientales y dietéticos. Los síntomas iniciales son inespecíficos, por lo que el paciente y el médico de primer contacto los pasan por alto. La manifestación sintomática más común es la linfadenopatía cervical, que puede ser bilateral y voluminosa incluso en 50% de los afectados. Se comunica el caso de un paciente de 70 años de edad con diagnóstico de carcinoma nasofaríngeo, que acudió al servicio de medicina interna por adenopatía cervical bilateral, y cuyo diagnóstico final requirió un enfoque multidisciplinario.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Nasopharyngeal carcinoma (NPC) is a squamous cell tumor that usually develops around the lateral wall of the nasopharynx near the Eustachian tube ostium. Overall it is a rare cause of cancer worldwide, although it has a high frequency in some endemic regions of Southeast Asia and Alaska. In Mexico, nasopharyngeal carcinoma is not listed among the 20 leading causes of cancer in the country. The etiology of NPC has been linked mainly to Epstein-Barr virus (EBV), but also involves genetic, racial, environmental and dietary risk factors. The clinical presentation is non-specific and this can be misleading to the primary care physician. The most common symptomatic presentation is cervical lymphadenopathy, which can be bilateral and voluminous up to 50% of patients. This paper reports the case of a 70 year-old man diagnosed with NPC, who was admitted in the internal medicine ward because of bilateral cervical lymphadenopathy, and a multidisciplinary approach was required to establish the final diagnosis.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[carcinoma nasofaríngeo]]></kwd>
<kwd lng="es"><![CDATA[adenopatía cervical]]></kwd>
<kwd lng="es"><![CDATA[abordaje diagnóstico]]></kwd>
<kwd lng="en"><![CDATA[nasopharyngeal carcinoma]]></kwd>
<kwd lng="en"><![CDATA[cervical lymphadenopathy]]></kwd>
<kwd lng="en"><![CDATA[diagnostic approach]]></kwd>
</kwd-group>
</article-meta>
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<surname><![CDATA[Chang]]></surname>
<given-names><![CDATA[MC]]></given-names>
</name>
<name>
<surname><![CDATA[Chen]]></surname>
<given-names><![CDATA[JH]]></given-names>
</name>
<name>
<surname><![CDATA[Liang]]></surname>
<given-names><![CDATA[JA]]></given-names>
</name>
</person-group>
<source><![CDATA[Eur J Radiol]]></source>
<year>2013</year>
<volume>82</volume>
<page-range>366-73</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
