<?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>S0121-81232017000400247</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Male patient with C1q nephropathy and rheumatoid arthritis: A case report]]></article-title>
<article-title xml:lang="es"><![CDATA[Hombre con nefropatía C1q y artritis reumatoide: reporte de un caso]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Benavides]]></surname>
<given-names><![CDATA[Mario Fernando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fernández-Avila]]></surname>
<given-names><![CDATA[Daniel Gerardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gutiérrez]]></surname>
<given-names><![CDATA[Juan Martín]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Militar Nueva Granada Facultad de Medicina Unidad de Reumatologia]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Pontificia Universidad Javeriana Facultad de Medicina ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Hospital Universitario San Ignacio Departamento de Medicina Interna ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2017</year>
</pub-date>
<volume>24</volume>
<numero>4</numero>
<fpage>247</fpage>
<lpage>250</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0121-81232017000400247&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0121-81232017000400247&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0121-81232017000400247&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract C1q nephropathy was first described in 1985 as a process of glomerulonephritis with mesangial C1q deposit. The histology is similar to lupus nephritis, and was initially described as being seronegative renal lupus. However, these two entities are now considered different pathological processes. Its association with rheumatoid arthritis is unusual, and there are no cases with a similar presentation reported in the literature. In this article, the case is presented of a man who developed both these conditions.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La nefropatía C1q, se describió por primera vez en 1985, como un proceso de glomerulonefritis con depósito mesangial de C1q, histológicamente similar a la nefritis lúpica, siendo inicialmente descrita como lupus renal seronegativo, sin embargo, estas dos entidades se consideran actualmente como procesos patológicos diferentes. Su asociación con artritis reumatoide es inusual y la literatura no reporta casos con presentación similar. A continuación, presentamos el caso de un hombre que desarrolla estas dos entidades.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Complement C1q]]></kwd>
<kwd lng="en"><![CDATA[Nephritis]]></kwd>
<kwd lng="en"><![CDATA[Rheumatoid arthritis]]></kwd>
<kwd lng="en"><![CDATA[Nephrotic syndrome]]></kwd>
<kwd lng="es"><![CDATA[Complemento C1q]]></kwd>
<kwd lng="es"><![CDATA[Nefritis]]></kwd>
<kwd lng="es"><![CDATA[Artritis reumatoide]]></kwd>
<kwd lng="es"><![CDATA[Síndrome nefrótico]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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