<?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>1608-8921</journal-id>
<journal-title><![CDATA[Gaceta Médica Espirituana]]></journal-title>
<abbrev-journal-title><![CDATA[Gac Méd Espirit]]></abbrev-journal-title>
<issn>1608-8921</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Ciencias Médicas de Sancti Spíritus]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1608-89212019000300101</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Caracterización clínica y epidemiológica del carcinoma nasofaríngeo y su relación con el virus Epstein-Barr]]></article-title>
<article-title xml:lang="en"><![CDATA[Nasopharyngeal carcinoma and its relationship with the Epstein-Barr virus, clinical and epidemiological description]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fonseca Pichs]]></surname>
<given-names><![CDATA[Alejandro José]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González Fernández]]></surname>
<given-names><![CDATA[Nélido]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez Valerino]]></surname>
<given-names><![CDATA[Maiquel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rocha Remón]]></surname>
<given-names><![CDATA[Pavel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez Tenreiro]]></surname>
<given-names><![CDATA[Aliannys]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital Provincial General Camilo Cienfuegos  ]]></institution>
<addr-line><![CDATA[Sancti Spíritus ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto de Oncología y Radiobiología  ]]></institution>
<addr-line><![CDATA[Ciudad de la Habana ]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2019</year>
</pub-date>
<volume>21</volume>
<numero>3</numero>
<fpage>101</fpage>
<lpage>111</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S1608-89212019000300101&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S1608-89212019000300101&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S1608-89212019000300101&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Fundamento:  El carcinoma nasofaríngeo es el tumor maligno más frecuente del cavum. Estos tumores se diferencian de otros carcinomas epidermoide de la cabeza y cuello por su histología característica y su relación con el virus de Epstein-Barr.  Objetivo: Caracterizar clínica y epidemiológicamente el carcinoma de nasofaringe y su relación con el virus Epstein-Barr, en el Instituto Nacional de Oncología y Radiobiología, Ciudad de la Habana, en el período de enero a diciembre de 2012.  Metodología: Se realizó un estudio retrospectivo; se trabajó con un total de 16 historias clínicas. Se observaron variables como edad, sexo, tipo histológico, estadiamiento clínico, presencia del virus Epstein-Barr en el tumor, tratamiento aplicado, respuesta al tratamiento, recaída y estado del paciente.  Resultados:  El 50 % tenían entre 45-55 años de edad, 75 % eran hombres, el 50 % diagnosticados con tipo 3, 100 % negativo a la inmunohistoquímica para virus Epstein-Barr, predominó la etapa III con 43.75 %, el 56.25 % de los casos se trataron con radio-quimioterapia más quimioterapia, el 50 % tuvo respuesta completa, la recaída fue de 37.50 % y el 68.75 % de los pacientes estaba vivo a los 60 meses.  Conclusiones: En esta pequeña población con carcinoma nasofaríngeo, la totalidad de la población fue negativa a la presencia de virus Epstein-Barr por técnicas de inmunohistoquímica, por lo que su negatividad se hizo representativa en los tipo 3 y etapas avanzadas y no tuvo impacto en la respuesta al tratamiento y la supervivencia global.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Background:  Nasopharyngeal carcinoma is the most common malignant tumor of the cavum. These tumors differ from some other epidermoid carcinomas of the head and neck by their histology features and their Epstein-Barr virus relationship.  Objective:  To describe clinically and epidemiologically the nasopharyngeal carcinoma and its relationship with the Epstein-Barr virus, at the National Institute of Oncology and Radiobiology, Havana City, from January to December 2012.  Methodology:  A retrospective study was conducted; with a total of 16 medical records. Variables such as age, sex, histological type, clinical staging, and presence of Epstein - Barr virus in the tumor, applied treatment, response to treatment, relapse and patient status were observed.  Results:  50 % were between 45-55 years old, 75 % were men, 50 % diagnosed with type 3, 100 % negative to Epstein-Barr virus immunohistochemistry, stage III predominated with 43.75 %, 56.25 % of the cases were treated with radio-chemotherapy plus chemotherapy, 50 % had a complete response, relapse was 37.50 % and at 60 months 68.75 % of the patients were still alive.  Conclusions:  In this small population with nasopharyngeal carcinoma, the entire population was negative to the presence of Epstein-Barr virus applying immunohistochemical techniques, so its negativity became representative in type 3 and advanced stages and had no impact on the treatment response and overall survival.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Carcinoma nasofaríngeo]]></kwd>
<kwd lng="es"><![CDATA[virus Epstein-Barr]]></kwd>
<kwd lng="es"><![CDATA[nasofaringe]]></kwd>
<kwd lng="es"><![CDATA[cavum]]></kwd>
<kwd lng="es"><![CDATA[herpesvirus humano 4]]></kwd>
<kwd lng="en"><![CDATA[Nasopharyngeal carcinoma]]></kwd>
<kwd lng="en"><![CDATA[Epstein-Barr virus]]></kwd>
<kwd lng="en"><![CDATA[nasopharynx]]></kwd>
<kwd lng="en"><![CDATA[cavum]]></kwd>
<kwd lng="en"><![CDATA[herpesvirus 4 human]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Alcalde]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Basterra]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Rey]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Ruba]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Carcinoma de rinofaringe]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Basterra]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<source><![CDATA[Carcinomas de faringe]]></source>
<year>2007</year>
<page-range>59-100</page-range><publisher-loc><![CDATA[Badalona ]]></publisher-loc>
<publisher-name><![CDATA[Euromedice Ediciones Médicas]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Adham]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Kurniawan]]></surname>
<given-names><![CDATA[AN]]></given-names>
</name>
<name>
<surname><![CDATA[Muhtadi]]></surname>
<given-names><![CDATA[AI]]></given-names>
</name>
<name>
<surname><![CDATA[Roezin]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Hermani]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Gondhowiardjo]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Nasopharyngeal carcinoma in Indonesia: epidemiology, incidence, signs, and symptoms at presentation]]></article-title>
<source><![CDATA[Chin. j. cancer]]></source>
<year>2012</year>
<volume>31</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>185-96</page-range></nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cortés-Funes]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Colomer Bosch]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Carcinoma de Nasofaringe]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Hernán]]></surname>
<given-names><![CDATA[Cortés-Funes]]></given-names>
</name>
<name>
<surname><![CDATA[Bosch]]></surname>
<given-names><![CDATA[Colomer]]></given-names>
</name>
</person-group>
<source><![CDATA[Tratado de oncología]]></source>
<year>2009</year>
<page-range>209-23</page-range><publisher-loc><![CDATA[Barcelona ]]></publisher-loc>
<publisher-name><![CDATA[P. Permanyer]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Suárez Nieto]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Gil-Carcedo García]]></surname>
<given-names><![CDATA[LM]]></given-names>
</name>
<name>
<surname><![CDATA[Algarra]]></surname>
<given-names><![CDATA[JM]]></given-names>
</name>
<name>
<surname><![CDATA[Medina]]></surname>
<given-names><![CDATA[JE]]></given-names>
</name>
<name>
<surname><![CDATA[Ortega del Álamo]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Trinidad Pinedo]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<source><![CDATA[Tratado de otorrinolaringología y cirugía de cabeza y cuello]]></source>
<year>2009</year>
<publisher-loc><![CDATA[Madrid ]]></publisher-loc>
<publisher-name><![CDATA[Editorial Médica Panamericana]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lalwani Anil]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
</person-group>
<source><![CDATA[Diagnóstico y tratamiento en otorrinolaringología. Cirugía de cabeza y cuello]]></source>
<year>2009</year>
<edition>2.a ed</edition>
<page-range>1028</page-range><publisher-loc><![CDATA[New York ]]></publisher-loc>
<publisher-name><![CDATA[McGraw-Hill]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Arredondo López]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Rodríguez Abreu]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Roca]]></surname>
<given-names><![CDATA[Michuli]]></given-names>
</name>
<name>
<surname><![CDATA[Salazar]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<source><![CDATA[Guías de Diagnóstico y Tratamiento en Oncología. Carcinoma de nasofaringe]]></source>
<year>2002</year>
<publisher-loc><![CDATA[La Habana ]]></publisher-loc>
<publisher-name><![CDATA[Instituto de oncología]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B7">
<label>7</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lu]]></surname>
<given-names><![CDATA[JJ]]></given-names>
</name>
<name>
<surname><![CDATA[Cooper]]></surname>
<given-names><![CDATA[JS]]></given-names>
</name>
<name>
<surname><![CDATA[Lee]]></surname>
<given-names><![CDATA[AWM]]></given-names>
</name>
</person-group>
<source><![CDATA[Nasopharyngeal Cancer: Multidisciplinary Management]]></source>
<year>2010</year>
<page-range>320</page-range><publisher-loc><![CDATA[New York ]]></publisher-loc>
<publisher-name><![CDATA[Springer Berlin Heidelberg]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B8">
<label>8</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Baert]]></surname>
<given-names><![CDATA[AL]]></given-names>
</name>
<name>
<surname><![CDATA[Brady]]></surname>
<given-names><![CDATA[LW]]></given-names>
</name>
<name>
<surname><![CDATA[Heilmann]]></surname>
<given-names><![CDATA[HP]]></given-names>
</name>
<name>
<surname><![CDATA[Knauth]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Molls]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Nieder]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
</person-group>
<source><![CDATA[Nasopharyngeal Cancer]]></source>
<year>2010</year>
<edition>1ra ed</edition>
<publisher-loc><![CDATA[New York ]]></publisher-loc>
<publisher-name><![CDATA[Springer Heidelberg Dordrecht]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B9">
<label>9</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pérez Plasencia]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Gómez González]]></surname>
<given-names><![CDATA[JL]]></given-names>
</name>
<name>
<surname><![CDATA[Santa Cruz Ruiz]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Muñoz Herrera]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Mateos Pérez Flores]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Pardal]]></surname>
<given-names><![CDATA[JL]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Estudio clínico descriptivo de 40 pacientes con Carcinoma de Nasofaringe en estadio avanzado en un área de bajo riesgo epidemiológico]]></article-title>
<source><![CDATA[Acta Otorrinolaringol Esp]]></source>
<year>2002</year>
<volume>53</volume>
<page-range>473-80</page-range></nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Adham]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Kurniawan]]></surname>
<given-names><![CDATA[AN]]></given-names>
</name>
<name>
<surname><![CDATA[Muhtadi]]></surname>
<given-names><![CDATA[AI]]></given-names>
</name>
<name>
<surname><![CDATA[Roezin]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Hermani]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Gondhowiardjo]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Nasopharyngeal carcinoma in Indonesia: epidemiology, incidence, signs, and symptoms at presentation]]></article-title>
<source><![CDATA[Chin J Cancer]]></source>
<year>2012</year>
<volume>31</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>185-96</page-range></nlm-citation>
</ref>
<ref id="B11">
<label>11</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zhang]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Liang]]></surname>
<given-names><![CDATA[SB]]></given-names>
</name>
<name>
<surname><![CDATA[Deng]]></surname>
<given-names><![CDATA[YM]]></given-names>
</name>
<name>
<surname><![CDATA[Lu]]></surname>
<given-names><![CDATA[RL]]></given-names>
</name>
<name>
<surname><![CDATA[Chen]]></surname>
<given-names><![CDATA[HY]]></given-names>
</name>
<name>
<surname><![CDATA[Zhao]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Primary tumor regression speed after radiotherapy and its prognostic significance in nasopharyngeal carcinoma: a retrospective study]]></article-title>
<source><![CDATA[BMC Cance]]></source>
<year>2014</year>
<volume>14</volume>
</nlm-citation>
</ref>
<ref id="B12">
<label>12</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ozyar]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Dizman]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Esassolak]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Ikizler]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Yildirim]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Caloglu]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Patterns of Care Study in Turkish Nasopharyngeal Cancer Patients (NAZOTURK): A Turkish Radiation Oncology Association Head and Neck Cancer Working Group Study]]></article-title>
<source><![CDATA[International Journal of Radiation Oncology Biology Physics]]></source>
<year>2015</year>
<volume>93</volume>
<numero>3</numero>
<issue>3</issue>
</nlm-citation>
</ref>
<ref id="B13">
<label>13</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kong]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Cai]]></surname>
<given-names><![CDATA[B-Z]]></given-names>
</name>
<name>
<surname><![CDATA[Chen]]></surname>
<given-names><![CDATA[X-Z]]></given-names>
</name>
<name>
<surname><![CDATA[Zhang]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[Y-M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Prognostic factors for survival of patients with nasopharyngeal carcinoma following conventional fractionation radiotherapy]]></article-title>
<source><![CDATA[Experimental and Therapeutic Medicine]]></source>
<year>2013</year>
<volume>6</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>57-60</page-range></nlm-citation>
</ref>
<ref id="B14">
<label>14</label><nlm-citation citation-type="book">
<source><![CDATA[Instituto Nacional del Cáncer. Cancer de nasofaringe]]></source>
<year>2015</year>
<publisher-loc><![CDATA[Chicago ]]></publisher-loc>
<publisher-name><![CDATA[INC]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B15">
<label>15</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Escamilla Carpintero]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Aguilà Artal]]></surname>
<given-names><![CDATA[AF]]></given-names>
</name>
<name>
<surname><![CDATA[Bonfill Abella]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Mur Restoy]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Díaz Argüello]]></surname>
<given-names><![CDATA[JJ]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Carcinoma nasofaringeo. Revisión retrospectiva de 23 años en nuestro centro]]></article-title>
<source><![CDATA[ORL Aragon]]></source>
<year>2015</year>
<volume>18</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>15-20</page-range></nlm-citation>
</ref>
<ref id="B16">
<label>16</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Coscarón Blanco]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Martín Garrido]]></surname>
<given-names><![CDATA[EP]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Carcinoma epidermoide de nasofaringe]]></article-title>
<source><![CDATA[Jano]]></source>
<year>2011</year>
<page-range>45-53</page-range></nlm-citation>
</ref>
<ref id="B17">
<label>17</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[JX]]></given-names>
</name>
<name>
<surname><![CDATA[Lu]]></surname>
<given-names><![CDATA[TX]]></given-names>
</name>
<name>
<surname><![CDATA[Huang]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Han]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Clinical Characteristics of Recurrent Nasopharyngeal Carcinoma in High-Incidence Area]]></article-title>
<source><![CDATA[The Scientific World Journal]]></source>
<year>2012</year>
<volume>2012</volume>
<page-range>1-8</page-range></nlm-citation>
</ref>
<ref id="B18">
<label>18</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Spratt]]></surname>
<given-names><![CDATA[DE]]></given-names>
</name>
<name>
<surname><![CDATA[Lee]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Current and emerging treatment options for nasopharyngeal carcinoma]]></article-title>
<source><![CDATA[OncoTargets ther]]></source>
<year>2012</year>
<volume>5</volume>
<page-range>297-308</page-range></nlm-citation>
</ref>
<ref id="B19">
<label>19</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zúñiga Orlich]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Rodríguez Rodríguez]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Gamboa Chaves]]></surname>
<given-names><![CDATA[AY]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Características clínico-epidemiológicas de los pacientes con diagnóstico de carcinoma nasofaríngeo]]></article-title>
<source><![CDATA[Rev Méd Costa Rica Centroamérica]]></source>
<year>2016</year>
<volume>73</volume>
<numero>618</numero>
<issue>618</issue>
<page-range>41-8</page-range></nlm-citation>
</ref>
<ref id="B20">
<label>20</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Moreno]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Salgado]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Azinovic]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Cañón]]></surname>
<given-names><![CDATA[RM]]></given-names>
</name>
<name>
<surname><![CDATA[López-Picazo]]></surname>
<given-names><![CDATA[JM]]></given-names>
</name>
<name>
<surname><![CDATA[Beltrán]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Carcinoma de nasofaringe localmente avanzado: resultados finales del tratamiento de quimiorradioterapia seguido de quimioterapia complementaria]]></article-title>
<source><![CDATA[Rev Oncología]]></source>
<year>2000</year>
<volume>2</volume>
<page-range>301-30</page-range></nlm-citation>
</ref>
<ref id="B21">
<label>21</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Tan]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Chang]]></surname>
<given-names><![CDATA[ET]]></given-names>
</name>
<name>
<surname><![CDATA[Chen]]></surname>
<given-names><![CDATA[C-J]]></given-names>
</name>
<name>
<surname><![CDATA[Hsu]]></surname>
<given-names><![CDATA[W-L]]></given-names>
</name>
<name>
<surname><![CDATA[Chien]]></surname>
<given-names><![CDATA[Y-C]]></given-names>
</name>
<name>
<surname><![CDATA[Hildesheim]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Proceedings of the 7th Biannual International Symposium on Nasopharyngeal Carcinoma 2015]]></article-title>
<source><![CDATA[BMC Proceedings]]></source>
<year>2016</year>
<volume>10</volume>
<numero>S1</numero>
<issue>S1</issue>
</nlm-citation>
</ref>
<ref id="B22">
<label>22</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Tsang]]></surname>
<given-names><![CDATA[CM]]></given-names>
</name>
<name>
<surname><![CDATA[Deng]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
<name>
<surname><![CDATA[Yip]]></surname>
<given-names><![CDATA[YL]]></given-names>
</name>
<name>
<surname><![CDATA[Zeng]]></surname>
<given-names><![CDATA[MS]]></given-names>
</name>
<name>
<surname><![CDATA[Lo]]></surname>
<given-names><![CDATA[KW]]></given-names>
</name>
<name>
<surname><![CDATA[Tsao]]></surname>
<given-names><![CDATA[SW]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Epstein Barr Virus infection an persistence in nasopharyngeal epithelial cells]]></article-title>
<source><![CDATA[Chin. j. cancer]]></source>
<year>2014</year>
<volume>33</volume>
<numero>11</numero>
<issue>11</issue>
<page-range>549-55</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
