<?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>0120-2448</journal-id>
<journal-title><![CDATA[Acta Medica Colombiana]]></journal-title>
<abbrev-journal-title><![CDATA[Acta Med Colomb]]></abbrev-journal-title>
<issn>0120-2448</issn>
<publisher>
<publisher-name><![CDATA[Asociacion Colombiana de Medicina Interna]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0120-24482018000400221</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Tumor pardo en esqueleto axial de dos pacientes con enfermedad renal crónica en diálisis]]></article-title>
<article-title xml:lang="en"><![CDATA[Brown tumor in the axial skeleton of two patients with chronic kidney disease in dialysis]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Carrillo-Bayona]]></surname>
<given-names><![CDATA[Jorge Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Agudelo-Cardona]]></surname>
<given-names><![CDATA[Carlos Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Muñoz-Díaz]]></surname>
<given-names><![CDATA[Harold Ariel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alvarado-Benavides]]></surname>
<given-names><![CDATA[Ana María]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Caicedo-Ramírez]]></surname>
<given-names><![CDATA[Juliana Andrea]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Zúñiga-Rodríguez]]></surname>
<given-names><![CDATA[Eduardo Adolfo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital de San José Departamento Imágenes Diagnósticas Universidad del Rosario]]></institution>
<addr-line><![CDATA[Bogotá D.C.]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad del Rosario  ]]></institution>
<addr-line><![CDATA[Bogotá D.C.]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional de Colombia  ]]></institution>
<addr-line><![CDATA[Bogotá D.C.]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad CES  ]]></institution>
<addr-line><![CDATA[Bogotá D.C.]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Universidad del Rosario  ]]></institution>
<addr-line><![CDATA[Bogotá D.C.]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af6">
<institution><![CDATA[,Universidad Nacional de Colombia Facultad de Medicina ]]></institution>
<addr-line><![CDATA[Bogotá D.C.]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2018</year>
</pub-date>
<volume>43</volume>
<numero>4</numero>
<fpage>221</fpage>
<lpage>225</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0120-24482018000400221&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0120-24482018000400221&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0120-24482018000400221&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Los tumores pardos son una forma localizada de osteítis fibrosa no neoplásica, secundaria a hiperparatiroidismo (primario o secundario). Hacen parte de las alteraciones del metabolismo mineral y óseo de la enfermedad renal crónica (ERC). Se manifiestan como lesiones líticas, expansivas, asociadas a masas de tejidos blandos, que pueden estar localizadas en cualquier parte del esqueleto, con predilección por las costillas, clavículas, pelvis, fémur, huesos faciales y mandíbula. Reportamos dos casos de paciente con ERC en terapia de reemplazo renal (TRR), con hiperparatiroidismo secundario y tumores pardos localizados en mandíbula, arcos costales y cuerpos vertebrales, con manifestaciones radiológicas atípicas.  Conclusión: los tumores pardos hacen parte de las alteraciones óseas de los pacientes con ERC. El aspecto benigno en los estudios de imágenes (lesiones expansivas sin destrucción de la cortical) en el contexto de un paciente con hiperparatiroidismo, pueden sugerir el diagnóstico. (Acta Med Colomb 2018; 43: 221-225).]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Brown tumors are a localized form of non-neoplastic osteitis fibrosa, secondary to hyperparathyroidism (primary or secondary). They are part of the alterations of the mineral and bone metabolism of chronic kidney disease (CKD). They manifest as lytic, expansive lesions associated to soft tissue masses that can be located in any part of the skeleton with predilection for the ribs, clavicles, pelvis, femur, facial bones and jaw. Two cases of patients with CKD in renal replacement therapy (RRT), with secondary hyperparathyroidism and brown tumors located in the jaw, costal arches and vertebral bodies, with atypical radiological manifestations are described.  Conclusion: brown tumors are part of the bone disorders of patients with CKD. The benign appearance in imaging studies (expansive lesions without destruction of the cortex) in the context of a patient with hyperparathyroidism, may suggest the diagnosis. (Acta Med Colomb 2018; 43: 221-225).]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[enfermedad renal crónica]]></kwd>
<kwd lng="es"><![CDATA[desorden mineral óseo]]></kwd>
<kwd lng="es"><![CDATA[hiperparatiroidismo]]></kwd>
<kwd lng="es"><![CDATA[tumores pardos]]></kwd>
<kwd lng="en"><![CDATA[cronic kidney disease]]></kwd>
<kwd lng="en"><![CDATA[bone mineral disorder]]></kwd>
<kwd lng="en"><![CDATA[hyperparathyroidism]]></kwd>
<kwd lng="en"><![CDATA[brown tumors]]></kwd>
</kwd-group>
</article-meta>
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