<?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>S0186-48662018000600020</article-id>
<article-id pub-id-type="doi">10.24245/mim.v34i6.2000</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Mielofibrosis primaria manifestada como fiebre de origen desconocido]]></article-title>
<article-title xml:lang="en"><![CDATA[Primary myelofibrosis manifested as fever of unknown origin.]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mendoza-Álvarez]]></surname>
<given-names><![CDATA[Sergio Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Moranchel-García]]></surname>
<given-names><![CDATA[Leslie]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez-Corchado]]></surname>
<given-names><![CDATA[Brenda Grisel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Deras-Quiñones]]></surname>
<given-names><![CDATA[Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Mexicano del Seguro Social  ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Mexicano del Seguro Social  ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2018</year>
</pub-date>
<volume>34</volume>
<numero>6</numero>
<fpage>1000</fpage>
<lpage>1006</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0186-48662018000600020&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0186-48662018000600020&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0186-48662018000600020&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Se comunica el caso de un paciente de 55 años de edad que inició con fiebre como síntoma principal de su padecimiento. Después de un protocolo de estudio sistematizado y orientado se llegó al diagnóstico de fiebre de origen desconocido como síndrome, cuyo diagnóstico etiológico fue mielofibrosis primaria, enfermedad hematológica poco frecuente que se distingue por fibrosis de la médula ósea, esplenomegalia y anemia. Se revisa el abordaje de la fiebre y sus etapas de estudio siguiendo las recomendaciones actuales, técnicas y científicas, pero adaptadas a nuestro medio y recursos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract This paper reports the case of a 55 year-old man who presented with fever as a primary symptom of his condition. A systematic protocol oriented study led to the diagnosis of fever of unknown origin as a syndrome whose etiologic diagnosis was primary myelofibrosis; rare hematologic disease characterized by fibrosis of the bone marrow, anemia and splenomegaly. A review of the approach of fever and stages of study is done according to current recommendations, technical and scientific, but adapted to our environment and resources.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Fiebre]]></kwd>
<kwd lng="es"><![CDATA[fiebre de origen desconocido]]></kwd>
<kwd lng="es"><![CDATA[mielofibrosis primaria]]></kwd>
<kwd lng="en"><![CDATA[Fever]]></kwd>
<kwd lng="en"><![CDATA[Fever of unknown origin]]></kwd>
<kwd lng="en"><![CDATA[Primary myelofibrosis]]></kwd>
</kwd-group>
</article-meta>
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