<?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>1817-5996</journal-id>
<journal-title><![CDATA[Revista Cubana de Reumatología]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Cuba Reumatol]]></abbrev-journal-title>
<issn>1817-5996</issn>
<publisher>
<publisher-name><![CDATA[Editorial CIMEQ]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1817-59962020000400009</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Tomografía por emisión de positrones en el diagnóstico de sarcoidosis y síndrome de Löfgren]]></article-title>
<article-title xml:lang="en"><![CDATA[Tomography by emission of positrons in the diagnosis of sarcoidosis and Löfgren's syndrome]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Reyes Llerena]]></surname>
<given-names><![CDATA[Gil Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Frías Pita]]></surname>
<given-names><![CDATA[Rafael]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Basulto Quiroz]]></surname>
<given-names><![CDATA[Niuvys]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mateo Díaz]]></surname>
<given-names><![CDATA[Pablo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez Quesada]]></surname>
<given-names><![CDATA[José Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[GutiérrezRodríguez]]></surname>
<given-names><![CDATA[Daril]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez Mesa]]></surname>
<given-names><![CDATA[Nelson]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Piñera Molina]]></surname>
<given-names><![CDATA[Jesús]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Herrera Pérez]]></surname>
<given-names><![CDATA[Carlos Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Ciencias Médicas de La Habana Centro de Investigaciones Médico Quirúrgicas ]]></institution>
<addr-line><![CDATA[La Habana ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Ciencias Médicas de La Habana Policlínico Docente de G y 19 ]]></institution>
<addr-line><![CDATA[La Habana ]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2020</year>
</pub-date>
<volume>22</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S1817-59962020000400009&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S1817-59962020000400009&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S1817-59962020000400009&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN La sarcoidosis es una enfermedad granulomatosa no caseificante, multisistémica, de causa desconocida, que compromete el pulmón y los ganglios linfáticos mediastinales entre el 90-95 % de los casos. También puede afectar otros órganos como las glándulas salivales, piel, ojos, hígado, bazo, corazón, huesos y sistema nervioso central. El compromiso torácico representa la principal causa de morbilidad con unas 10/100 000 personas al año y mortalidad. Nuestro estudio tuvo como objetivo presentar a un paciente de 45 años de edad atendido por tener manifestaciones clínicas, paraclínicas y radiográficas que permitieron establecer, sin confirmar mediante estudio histológico, el diagnóstico de una forma aguda de sarcoidosis. Su forma clínica de expresión coincidió con el síndrome de Löfgren con ensanchamiento mediastinal bilateral por linfoadenopatía hiliar, síndrome febril, eritema nudoso y artritis aguda en miembros inferiores, que desarrollan entre un 20-30 % de los pacientes con sarcoidosis. Se le realizó una tomografía por emisión de positrones, cuyos resultados ofrecieron elementos diagnósticos propios de un proceso inflamatorio pulmonar alejado de las características propias de una neoplasia maligna. Después de una profunda evaluación del riesgo-beneficio, se impuso tratamiento inmunosupresor con esteroides a dosis elevadas y seguimiento estrecho. Observamos una evolución muy positiva e inmediata desde el punto de vista clínico y radiográfico. Luego de varias semanas de tratamiento se apreciaron los cambios con marcada mejoría hasta pasados 3 meses que constatamos prácticamente una casi desaparición de las imágenes radiográficas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Sarcoidosis is a multisystemic, non-caseating granulomatous disease of unknown cause that involves the lung and the mediastinal lymph nodes in between 90% and 95% of cases. It can also affect other organs, such as the salivary glands, skin, eyes, liver, spleen, heart, bones, and central nervous system. Thoracic involvement represents the main cause of morbidity and mortality in patients with this entity, which occurs in about 10 / 100,000 people a year. Our study aimed to present a 45-year-old patient treated for presenting clinical, paraclinical and radiological manifestations that allow the diagnosis of an acute form of sarcoidosis to be established without confirming by histological study. Its clinical form of expression showed the presence of Löfgren's syndrome with bilateral mediastinal widening due to hilar lymphadenopathy, febrile syndrome, erythema nodosum, and acute arthritis in the lower limbs, which 20-30% of patients with sarcoidosis develop. A positron emission tomography scan was performed and its results offered us diagnostic elements typical of a pulmonary inflammatory process far from the characteristics of a malignant neoplastic process.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[sarcoidosis]]></kwd>
<kwd lng="es"><![CDATA[linfoadenopatía hiliar bilateral]]></kwd>
<kwd lng="es"><![CDATA[eritema nodoso]]></kwd>
<kwd lng="es"><![CDATA[síndrome de Löfgren]]></kwd>
<kwd lng="es"><![CDATA[tomografía por emisión de positrones]]></kwd>
<kwd lng="es"><![CDATA[PET-CT]]></kwd>
<kwd lng="en"><![CDATA[sarcoidosis]]></kwd>
<kwd lng="en"><![CDATA[bilateral hilar lymphadenopathy]]></kwd>
<kwd lng="en"><![CDATA[erythema nodosum]]></kwd>
<kwd lng="en"><![CDATA[Löfgren's syndrome]]></kwd>
<kwd lng="en"><![CDATA[PET-CT]]></kwd>
</kwd-group>
</article-meta>
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