<?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>1665-1146</journal-id>
<journal-title><![CDATA[Boletín médico del Hospital Infantil de México]]></journal-title>
<abbrev-journal-title><![CDATA[Bol. Med. Hosp. Infant. Mex.]]></abbrev-journal-title>
<issn>1665-1146</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Salud, Hospital Infantil de México Federico Gómez]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1665-11462021000600631</article-id>
<article-id pub-id-type="doi">10.24875/bmhim.20000375</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Primary meningococcal arthritis of the hip due to serogroup W in a pediatric patient]]></article-title>
<article-title xml:lang="es"><![CDATA[Artritis meningocócica primaria de cadera por serogrupo W en un paciente pediátrico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Dapueto]]></surname>
<given-names><![CDATA[Gabriel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Barrios]]></surname>
<given-names><![CDATA[Patricia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Zabala]]></surname>
<given-names><![CDATA[Cristina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Peluffo]]></surname>
<given-names><![CDATA[Gabriel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Giachetto]]></surname>
<given-names><![CDATA[Gustavo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de la República Clínica Pediátrica B ]]></institution>
<addr-line><![CDATA[Montevideo ]]></addr-line>
<country>Uruguay</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de la República Clínica Pediátrica C ]]></institution>
<addr-line><![CDATA[Montevideo ]]></addr-line>
<country>Uruguay</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad de la República Clínica Pediátrica A ]]></institution>
<addr-line><![CDATA[Montevideo ]]></addr-line>
<country>Uruguay</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<volume>78</volume>
<numero>6</numero>
<fpage>631</fpage>
<lpage>635</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1665-11462021000600631&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1665-11462021000600631&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1665-11462021000600631&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background: Primary meningococcal arthritis (PMA) is defined as the presence of acute septic arthritis with the identification of Neisseria meningitidis in synovial fluid or blood cultures but no clinical evidence of sepsis or meningitis. This report aimed to describe a clinical case of PMA caused by serogroup W, an uncommon etiology of this disease in Uruguay, and review the available literature.  Case report: We report the case of a 5-year-old female, with no past medical history, admitted to the emergency department with a 12-hour history of fever of 39 °C and a limp. The patient was hemodynamically stable and had no clinical evidence of meningitis. Hip ultrasound showed an increase in synovial fluid. Arthrocentesis showed purulent exudate and synovial fluid culture showed no growth after five days. The blood culture showed isolates of N. meningitidis, serogroup W. The patient received treatment with ceftriaxone, and drainage of the affected joint was performed with excellent clinical response.  Conclusions: Primary meningococcal arthritis is a rare presentation of meningococcal disease. Systematic arthrocentesis and the adequacy of antibiotic therapy when septic arthritis is clinically suspected are essential for confirming the diagnosis and decompressive drainage of the involved joint. This report is the first of PMA caused by serogroup W in Uruguay. Although the most common serogroup involved in meningococcal arthritis is serogroup B in Uruguay, an increase in serogroup W-related diseases has been reported in Chile and Argentina, emphasizing the need for epidemiological surveillance.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción: La artritis meningocócica primaria (AMP) se define como la presencia de artritis séptica aguda sin meningitis ni sepsis meningocócica y con aislamiento de Neisseria meningitidis en líquido articular o sangre. El objetivo de este reporte es presentar un caso clínico de AMP causada por el serogrupo W, una etiología poco frecuente de esta enfermedad en Uruguay, y revisar la literatura disponible.  Caso clínico: Se reporta el caso de una paciente de 5 años, sana, que ingresó por cojera dolorosa y fiebre de 39 °C de 12 horas de evolución. La paciente se encontró hemodinámicamente estable y sin evidencia de meningitis. La ecografía de cadera mostró un aumento del líquido sinovial; la artrocentesis, material purulento . No se observó desarrollo en el cultivo del líquido articular y en el hemocultivo se reportó N. meningitidis del serogrupo W. Se realizó drenaje articular y se administró ceftriaxona intravenosa. La paciente presentó buena evolución.  Conclusiones: La presentación de la enfermedad meningocócica como artritis séptica aguda es extremadamente infrecuente. La punción articular sistemática y la adecuación del tratamiento antibiótico frente a la sospecha de artritis séptica son fundamentales para la confirmación del diagnóstico, además del drenaje descompresivo de la articulación. Este es el primer caso clínico reportado en Uruguay de AMP causada por el serogrupo W. Si bien en nuestro país la mayoría de los casos se deben al serogrupo B, en Chile y Argentina se ha comunicado un aumento del número de casos por el serogrupo W, lo que enfatiza la importancia de la vigilancia epidemiológica.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Infectious arthritis]]></kwd>
<kwd lng="en"><![CDATA[Meningococcal infections]]></kwd>
<kwd lng="en"><![CDATA[Neisseria meningitidis]]></kwd>
<kwd lng="es"><![CDATA[Artritis infecciosa]]></kwd>
<kwd lng="es"><![CDATA[Infecciones meningocócicas]]></kwd>
<kwd lng="es"><![CDATA[Neisseria meningitidis]]></kwd>
</kwd-group>
</article-meta>
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