<?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>0121-8123</journal-id>
<journal-title><![CDATA[Revista Colombiana de Reumatología]]></journal-title>
<abbrev-journal-title><![CDATA[Rev.Colomb.Reumatol.]]></abbrev-journal-title>
<issn>0121-8123</issn>
<publisher>
<publisher-name><![CDATA[Asociación Colombiana de Reumatología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0121-81232021000400300</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Inclusión body myositis: A differential diagnosis to consider in patients with myopathy refractory to immunosuppressants. Two case reports]]></article-title>
<article-title xml:lang="es"><![CDATA[Miopatía por cuerpos de inclusión: un diagnóstico diferencial que considerar en pacientes con miopatía refractaria a inmunosupresores. Reporte de 2 casos]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bolacos-Toro]]></surname>
<given-names><![CDATA[Fernando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arias-Jaramillo]]></surname>
<given-names><![CDATA[Daniel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aun-Mejía]]></surname>
<given-names><![CDATA[Manuela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Castro-Henao]]></surname>
<given-names><![CDATA[Juliana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fernández-Ávila]]></surname>
<given-names><![CDATA[Daniel G.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Saldarriaga-Rivera]]></surname>
<given-names><![CDATA[Lina María]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Technological University of Pereira School of Medicine ]]></institution>
<addr-line><![CDATA[Pereira ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Clínica Los Rosales Service of Rheumatology ]]></institution>
<addr-line><![CDATA[Pereira ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Hospital Universitario San Ignacio Service of Rheumatology ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</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>28</volume>
<numero>4</numero>
<fpage>300</fpage>
<lpage>305</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0121-81232021000400300&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0121-81232021000400300&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0121-81232021000400300&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Inclusion body myositis is part of the group of inflammatory myopathies, representing 30% of this group of diseases, and is considered an orphan disease because its estimated prevalence is less than 5 per 10,000 inhabitants. It produces weakness and atrophy of the proximal and distal muscles. The pathophysiological mechanisms are mainly autoimmune, inflammatory, and degenerative. The cases are presented of two female patients who came to  : the emergency department due to progressive loss of upper and lower limb strength, and progressive asymmetric muscle weakness.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN La miositis por cuerpos de inclusión forma parte del grupo de las miopatías inflamatorias, de las que representa el 30%; es considerada una enfermedad huérfana, ya que se estima que su prevalencia es menor a 5 por cada 10.000 habitantes. Produce debilidad y atrofia de los músculos proximales y distales. Los mecanismos fisiopatológicos son principalmente autoinmunes, inflamatorios y degenerativos. Se presentan 2 casos de mujeres, quienes acudieron a urgencias por pérdida progresiva de la fuerza en miembros superiores e inferiores, con debilidad muscular asimétrica de curso progresivo.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Myositis]]></kwd>
<kwd lng="en"><![CDATA[Inclusion bodies]]></kwd>
<kwd lng="en"><![CDATA[Muscular weakness]]></kwd>
<kwd lng="en"><![CDATA[Biopsy]]></kwd>
<kwd lng="en"><![CDATA[Electromyography]]></kwd>
<kwd lng="es"><![CDATA[Miositis]]></kwd>
<kwd lng="es"><![CDATA[Cuerpos de inclusión]]></kwd>
<kwd lng="es"><![CDATA[Debilidad muscular]]></kwd>
<kwd lng="es"><![CDATA[Biopsia]]></kwd>
<kwd lng="es"><![CDATA[Electromiografía]]></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[Hilton-Jones]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Brady]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Diagnostic criteria for inclusion body myositis]]></article-title>
<source><![CDATA[J Intern Med.]]></source>
<year></year>
<volume>016</volume>
<numero>280</numero>
<issue>280</issue>
<page-range>52-62</page-range></nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Barohn]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Dimachkie]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Inclusion body myositis]]></article-title>
<source><![CDATA[Semin Neurol.]]></source>
<year>2012</year>
<numero>32</numero>
<issue>32</issue>
<page-range>237-45</page-range></nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dimberg]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The office evaluation of weakness]]></article-title>
<source><![CDATA[Semin Neurol]]></source>
<year>2011</year>
<numero>31</numero>
<issue>31</issue>
<page-range>115-30</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[Rider]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Aggarwal]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Machado]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Hogrel]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Reed]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Stine]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Update on outcome assessment in myositis.]]></article-title>
<source><![CDATA[Nat Rev Rheumatol]]></source>
<year>2018</year>
<numero>14</numero>
<issue>14</issue>
<page-range>303-18</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[Askanas]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<name>
<surname><![CDATA[Enge]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
<name>
<surname><![CDATA[Nogalska]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Sporadic inclusion-body myositis: a degenerative muscle disease associated with aging impaired muscle protein homeostasis and abnormal mitophagy]]></article-title>
<source><![CDATA[Biochim Biophys Acta.]]></source>
<year>2015</year>
<numero>1852</numero>
<issue>1852</issue>
<page-range>633-43</page-range></nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dalakas]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Inflammatory muscle diseases]]></article-title>
<source><![CDATA[N Engl J Med]]></source>
<year>2015</year>
<numero>372</numero>
<issue>372</issue>
<page-range>1734&#8211;47</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[Amato]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Greenberg]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Inflammatory myopathies]]></article-title>
<source><![CDATA[Continuum]]></source>
<year>2013</year>
<numero>19</numero>
<issue>19</issue>
<page-range>1615-33</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[Lloyd]]></surname>
<given-names><![CDATA[TE]]></given-names>
</name>
<name>
<surname><![CDATA[Mammen]]></surname>
<given-names><![CDATA[AL]]></given-names>
</name>
<name>
<surname><![CDATA[Amato]]></surname>
<given-names><![CDATA[AA]]></given-names>
</name>
<name>
<surname><![CDATA[Weiss]]></surname>
<given-names><![CDATA[MD]]></given-names>
</name>
<name>
<surname><![CDATA[Needham]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Greenberg]]></surname>
<given-names><![CDATA[SA.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Evaluation and construction of diagnostic criteria for inclusion body myositis]]></article-title>
<source><![CDATA[Neurology]]></source>
<year>2014</year>
<volume>83</volume>
<page-range>426-33</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[Benveniste]]></surname>
<given-names><![CDATA[O]]></given-names>
</name>
<name>
<surname><![CDATA[Stenzel]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
<name>
<surname><![CDATA[Hilton-Jones]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Sandri]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Boyer]]></surname>
<given-names><![CDATA[O]]></given-names>
</name>
<name>
<surname><![CDATA[van Engelen]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Amyloid deposits and inflammatory infiltrates in sporadic inclusion body myositis: the inflammatory egg comes before the degenerative chicken]]></article-title>
<source><![CDATA[Acta Neuropathol.]]></source>
<year>2015</year>
<numero>129</numero>
<issue>129</issue>
<page-range>611-24</page-range></nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Malik]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Hayat]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Kali]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Guzmán]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Idiopathic inflammatory myopathies: clinical approach and management]]></article-title>
<source><![CDATA[Front Neurol]]></source>
<year>2016</year>
<numero>7</numero>
<issue>7</issue>
<page-range>19</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[Haczkiewicz]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Sebastian]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Piotrowska]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Misterska-Skóra]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Hakm]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Skoczynska]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Immunohistochemical and ultrastructural analysis of sporadic inclusion body myositis: a case series]]></article-title>
<source><![CDATA[Rheumatol Int]]></source>
<year>2019</year>
<numero>39</numero>
<issue>39</issue>
<page-range>1291-301</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[McHugh]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Tansley]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Autobodies in myositis]]></article-title>
<source><![CDATA[Nat Rev Rheumatol]]></source>
<year>2018</year>
<numero>14</numero>
<issue>14</issue>
<page-range>290-302</page-range></nlm-citation>
</ref>
<ref id="B13">
<label>13</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lundberg]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[de Visser]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Werth]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Classification of myositis.]]></article-title>
<source><![CDATA[Nat Rev Rheumatol]]></source>
<year>2018</year>
<numero>14</numero>
<issue>14</issue>
<page-range>269-78</page-range></nlm-citation>
</ref>
<ref id="B14">
<label>14</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[de Saboia Mont' Alverne]]></surname>
<given-names><![CDATA[AR]]></given-names>
</name>
<name>
<surname><![CDATA[Nagahashi Marie]]></surname>
<given-names><![CDATA[SK]]></given-names>
</name>
<name>
<surname><![CDATA[Levy-Neto]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Carlos de Souza]]></surname>
<given-names><![CDATA[FH]]></given-names>
</name>
<name>
<surname><![CDATA[de Carvalho]]></surname>
<given-names><![CDATA[MS]]></given-names>
</name>
<name>
<surname><![CDATA[Katsuyuki Shinjo]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Miosite de corpos de inclusão: série de 30 casos de um centro terciário brasileiro.]]></article-title>
<source><![CDATA[Acta Reumatol Port.]]></source>
<year>2013</year>
<numero>38</numero>
<issue>38</issue>
<page-range>179-85</page-range></nlm-citation>
</ref>
<ref id="B15">
<label>15</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ellen]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Adam D]]></surname>
<given-names><![CDATA[Rubin]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Dysphagia due to inclusion body myositis: case presentation and review of the literature]]></article-title>
<source><![CDATA[Ann Otol Rhinol Laryngol]]></source>
<year>2014</year>
<numero>123</numero>
<issue>123</issue>
<page-range>605-8</page-range></nlm-citation>
</ref>
<ref id="B16">
<label>16</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dardis]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Antezana]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Tanji]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Maccabee]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Inclusion body myositis: a case presenting with respiratory failure and autopsy findings leading to the hypothesis of a paraneoplastic cause]]></article-title>
<source><![CDATA[Am J Case Rep]]></source>
<year>2017</year>
<numero>18</numero>
<issue>18</issue>
</nlm-citation>
</ref>
<ref id="B17">
<label>17</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Misterska-Skóra]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Sebastian]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Dziegiel]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Sebastian]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Wiland]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Inclusion body myositis associated with Sjogren's síndrome.]]></article-title>
<source><![CDATA[Rheumatol Int]]></source>
<year>2013</year>
<numero>33</numero>
<issue>33</issue>
<page-range>3083-6</page-range></nlm-citation>
</ref>
<ref id="B18">
<label>18</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Chinoy]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Lilleker]]></surname>
<given-names><![CDATA[JB]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Pitfalls in the diagnosis of myositis]]></article-title>
<source><![CDATA[Best Pract Res Clin Rheumatol]]></source>
<year>2020</year>
<page-range>101486</page-range></nlm-citation>
</ref>
<ref id="B19">
<label>19</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dubowitz]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<name>
<surname><![CDATA[Sewry]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Oldfors]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<source><![CDATA[Muscle biopsy: a practical approach]]></source>
<year>2013</year>
<edition>4</edition>
<page-range>592</page-range><publisher-loc><![CDATA[Londres ]]></publisher-loc>
<publisher-name><![CDATA[Elsevier Saunders]]></publisher-name>
</nlm-citation>
</ref>
</ref-list>
</back>
</article>
