<?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>0034-7523</journal-id>
<journal-title><![CDATA[Revista Cubana de Medicina]]></journal-title>
<abbrev-journal-title><![CDATA[Rev cubana med]]></abbrev-journal-title>
<issn>0034-7523</issn>
<publisher>
<publisher-name><![CDATA[Centro Nacional de Información de Ciencias MédicasEditorial Ciencias Médicas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0034-75232019000400005</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Caracterización de pacientes con fiebre de origen desconocido recurrente]]></article-title>
<article-title xml:lang="en"><![CDATA[Characterizing patients with recurrent fever of unknown origin]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valdés Álvarez]]></surname>
<given-names><![CDATA[Karen]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Tamargo Barbeito]]></surname>
<given-names><![CDATA[Teddy Osmin]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital Clínico Quirúrgico &#8220;Hermanos Ameijeiras&#8221;  ]]></institution>
<addr-line><![CDATA[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>58</volume>
<numero>4</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S0034-75232019000400005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S0034-75232019000400005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S0034-75232019000400005&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción:  La fiebre de origen desconocido es un síndrome que genera un gran desafío para el pensamiento clínico; el patrón recurrente es el subtipo más retador y de difícil diagnóstico etiológico.  Objetivo:  Caracterizar los pacientes con fiebre de origen desconocido con patrón recurrente.  Método:  Se realizó un estudio descriptivo de corte transversal en el periodo de enero de 2008 a diciembre de 2015. La muestra quedó constituida por 48 pacientes, los cuales fueron hospitalizados y se les realizó una evaluación clínica en el Hospital Clínico Quirúrgico &#8220;Hermanos Amejeiras&#8221;. Para el análisis de los datos se utilizaron medidas de resumen para las variables cualitativas y para las cuantitativas, media y desviación estándar.  Resultados:  La edad media fue 41,3 años, predominaron los hombres (62,5 %), la duración media de la fiebre fue de 497 días y las pistas clínicas más importantes fueron los hallazgos de adenopatías (43,8 %) y hepatomegalia (22,9 %). Los casos sin diagnóstico fueron 45,8 %.  Conclusiones:  La fiebre de origen desconocido con patrón recurrente es de difícil diagnóstico. A pesar de una evaluación clínica minuciosa, la mayoría de los pacientes quedan sin diagnóstico.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction:  Fever of unknown origin is a syndrome that generates great challenge for clinical thought; the recurrent pattern is the most challenging subtype and with difficult etiological diagnosis.  Objective:  To describe patients with fever of unknown origin with recurring pattern.  Method:  A descriptive cross-sectional study was carried out from January 2008 to December 2015. Forty-eight patients formed the sample. They were hospitalized and underwent clinical evaluation at "Hermanos Amejeiras" Surgical Clinical Hospital. For data analysis, summary measures were used for qualitative variables and mean and standard deviation variables were used for quantitative.  Results:  The mean age was 41.3 years, men predominated (62.5 %), the mean duration of fever was 497 days, and the most important clinical signs were the findings of lymphadenopathy (43.8 %) and hepatomegaly. (22.9 %). Undiagnosed cases were 45.8 %.  Conclusions:  Fever of unknown origin with recurring pattern is difficult to diagnose. Despite careful clinical evaluation, most patients remain undiagnosed.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Síndrome]]></kwd>
<kwd lng="es"><![CDATA[fiebre de origen desconocido]]></kwd>
<kwd lng="es"><![CDATA[fiebre recurrente]]></kwd>
<kwd lng="en"><![CDATA[syndrome]]></kwd>
<kwd lng="en"><![CDATA[fever of unknown origin]]></kwd>
<kwd lng="en"><![CDATA[recurrent fever]]></kwd>
</kwd-group>
</article-meta>
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