<?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>1139-7632</journal-id>
<journal-title><![CDATA[Pediatría Atención Primaria]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Pediatr Aten Primaria]]></abbrev-journal-title>
<issn>1139-7632</issn>
<publisher>
<publisher-name><![CDATA[Asociación Española de Pediatría de Atención Primaria]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1139-76322023000100006</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Artritis parece, artritis idiopática juvenil no es]]></article-title>
<article-title xml:lang="en"><![CDATA[Arthritis seems, Juvenile idiopathic arthritis is not]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vidal-Lana]]></surname>
<given-names><![CDATA[Paula]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cemeli-Cano]]></surname>
<given-names><![CDATA[Mercedes]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez-Sanz]]></surname>
<given-names><![CDATA[Mª Luz]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro de Salud Valdespartera  ]]></institution>
<addr-line><![CDATA[Zaragoza ]]></addr-line>
<country>España</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2023</year>
</pub-date>
<volume>25</volume>
<numero>97</numero>
<fpage>41</fpage>
<lpage>48</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_arttext&amp;pid=S1139-76322023000100006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_abstract&amp;pid=S1139-76322023000100006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_pdf&amp;pid=S1139-76322023000100006&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[ Resumen En el niño con dolor e inflamación articular hay que tener en cuenta un amplio diagnóstico diferencial que incluye traumatismos, infecciones, enfermedades reumatológicas y neoplasias. Las manifestaciones musculoesqueléticas pueden ser el síntoma inicial de una leucemia hasta en un 20-30% de los casos, a veces incluso como único síntoma inicial, con el consecuente retraso en el diagnóstico. Presentamos el caso de un paciente de 13 años con artritis de varias articulaciones, con evolución atípica, que fue finalmente diagnosticado de leucemia linfoblástica aguda.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ Abstract When caring for children suffering articular pain or swelling, we must consider a wide differential diagnosis including trauma, infections, rheumatological diseases and neoplasms. Musculoskeletal complaints can be the first symptom of a leukemia in up to 20-30% of cases, sometimes as the only first symptom, causing delays on the diagnosis. We present the case of a 13 years old boy suffering several joint arthritis, with atypical evolution, who was finally diagnosed with Acute Linfoblastic Leukemia.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Artritis]]></kwd>
<kwd lng="es"><![CDATA[Artritis idiopática juvenil]]></kwd>
<kwd lng="es"><![CDATA[Leucemia]]></kwd>
<kwd lng="en"><![CDATA[Arthritis]]></kwd>
<kwd lng="en"><![CDATA[Juvenile idiopathic arthritis]]></kwd>
<kwd lng="en"><![CDATA[Leukemia]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Brix]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Rosthoj]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Glerup]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Hasle]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Herlin]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Identifying acute lymphoblastic leukemia mimicking juvenile idiopathic arthritis in children]]></article-title>
<source><![CDATA[PLoS One]]></source>
<year>2020</year>
<volume>15</volume>
<numero>8</numero>
<issue>8</issue>
</nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Louvigné]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Rakotonjanahary]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Goumy]]></surname>
<given-names><![CDATA[l]]></given-names>
</name>
<name>
<surname><![CDATA[Tavenard]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Brasme]]></surname>
<given-names><![CDATA[JF]]></given-names>
</name>
<name>
<surname><![CDATA[Rialland]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Persistent osteoarticular pain in children: early clinical and laboratory findings suggestive of acute lymphoblastic leukemia (a multicenter case-control study of 147 patients)]]></article-title>
<source><![CDATA[Pediatr Rheumatol Online J]]></source>
<year>2020</year>
<volume>18</volume>
</nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pérez Rodríguez]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Lassaletta Atienza]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[González Vincent]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Alonso Canal]]></surname>
<given-names><![CDATA[l]]></given-names>
</name>
<name>
<surname><![CDATA[Madero López]]></surname>
<given-names><![CDATA[l]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Leucemia linfoblástica aguda diagnosticada y tratada inicialmente como artritis crónica juvenil]]></article-title>
<source><![CDATA[An Pediatr (Barc)]]></source>
<year>2012</year>
<volume>76</volume>
<page-range>301-2</page-range></nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Casado Picón]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Barrios López]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[De Inocencio Arocena]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Baro Fernández]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Vivanco Martínez]]></surname>
<given-names><![CDATA[JL]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Dolor musculoesquelético: una forma de inicio frecuente de leucemia linfoblástica aguda]]></article-title>
<source><![CDATA[An Pediatr]]></source>
<year>2010</year>
<volume>72</volume>
<page-range>428-31</page-range></nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hernández]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Van Speybroeck]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Septic Arthritis, or Something More? Leukemia Presenting as Joint Pain and Swelling]]></article-title>
<source><![CDATA[Rheumatology &amp; Arthritis Learning Network]]></source>
<year>2015</year>
<publisher-name><![CDATA[Consultant 360]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Serra Bonett]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Guzmán]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Rodríguez]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Millán]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Rodríguez]]></surname>
<given-names><![CDATA[MA]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Leucemia aguda en niños con diagnóstico erróneo de artritis idiopática juvenil]]></article-title>
<source><![CDATA[Reumatol Clín]]></source>
<year>2008</year>
<volume>4</volume>
<page-range>70-3</page-range></nlm-citation>
</ref>
<ref id="B7">
<label>7</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Tsujioka]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Sugiyama]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Ueki]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Tozawa]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Takezaki]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Ohshima]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Difficulty in the diagnosis of bone and joint pain associated with pediatric acute leukemia; comparison with juvenile idiopathic arthritis]]></article-title>
<source><![CDATA[Mod Rheumatol]]></source>
<year>2017</year>
<volume>14</volume>
<page-range>1-6</page-range></nlm-citation>
</ref>
<ref id="B8">
<label>8</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Tafaghodi]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Aghighi]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Yazdi]]></surname>
<given-names><![CDATA[HR]]></given-names>
</name>
<name>
<surname><![CDATA[Shakiba]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Adibi]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Predictive plain X-ray findings in distinguishing early stage acute lymphoblastic leukemia from juvenile idiopathic arthritis]]></article-title>
<source><![CDATA[Clin Rheumatol]]></source>
<year>2009</year>
<volume>28</volume>
<page-range>1253-8</page-range></nlm-citation>
</ref>
<ref id="B9">
<label>9</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zombori]]></surname>
<given-names><![CDATA[l]]></given-names>
</name>
<name>
<surname><![CDATA[Kovacs]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Csoka]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Derfalvi]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Rheumatic symptoms in childhood leukaemia and lymphoma-a ten-year retrospective study]]></article-title>
<source><![CDATA[Pediatr Rheumatol Online J]]></source>
<year>2013</year>
<volume>11</volume>
</nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Jones]]></surname>
<given-names><![CDATA[OY]]></given-names>
</name>
<name>
<surname><![CDATA[Spencer]]></surname>
<given-names><![CDATA[CH]]></given-names>
</name>
<name>
<surname><![CDATA[Bowyer]]></surname>
<given-names><![CDATA[SL]]></given-names>
</name>
<name>
<surname><![CDATA[Dent]]></surname>
<given-names><![CDATA[PB]]></given-names>
</name>
<name>
<surname><![CDATA[Gottlieb]]></surname>
<given-names><![CDATA[BS]]></given-names>
</name>
<name>
<surname><![CDATA[Rabinovich]]></surname>
<given-names><![CDATA[CE]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A multicenter case-control study on predictive factors distinguishing chilhood leukemia from juvenile reumathoid arthritis]]></article-title>
<source><![CDATA[Pediatrics]]></source>
<year>2006</year>
<volume>117</volume>
<page-range>e840-4</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[Sinigaglia]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Gigante]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Bisinella]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Varotto]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Zanesco]]></surname>
<given-names><![CDATA[l]]></given-names>
</name>
<name>
<surname><![CDATA[Turra]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Musculoskeletal Manifestations in Pediatric Acute Leukemia]]></article-title>
<source><![CDATA[J Pediatr Orthopaedics]]></source>
<year>2008</year>
<volume>28</volume>
<page-range>20-8</page-range></nlm-citation>
</ref>
<ref id="B12">
<label>12</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mulder]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Herregods]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Mondelaers]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<name>
<surname><![CDATA[Benoit]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[De Moerloose]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Musculoskeletal manifestations in children with acute lymphoblastic leukaemia]]></article-title>
<source><![CDATA[Belg J Hematol]]></source>
<year>2012</year>
<volume>3</volume>
<page-range>3-11</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
