<?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>S1139-76322019000200011</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Hematuria macroscópica: ¿qué puede esconder?]]></article-title>
<article-title xml:lang="en"><![CDATA[Macroscopic hematuria, what can it hide?]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Morata Alba]]></surname>
<given-names><![CDATA[Júlia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Morata Alba]]></surname>
<given-names><![CDATA[Laia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital Lluís Alcanyís Servicio de Pediatría Unidad de Nefrología]]></institution>
<addr-line><![CDATA[Játiva Valencia]]></addr-line>
<country>España</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Centro de Salud del Departamento Xàtiva-Ontinyent  ]]></institution>
<addr-line><![CDATA[Játiva Valencia]]></addr-line>
<country>España</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2019</year>
</pub-date>
<volume>21</volume>
<numero>82</numero>
<fpage>e71</fpage>
<lpage>e75</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_arttext&amp;pid=S1139-76322019000200011&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_abstract&amp;pid=S1139-76322019000200011&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_pdf&amp;pid=S1139-76322019000200011&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El síndrome del cascanueces se caracteriza por la compresión extrínseca de la vena renal izquierda, lo que impide su drenaje sanguíneo normal en la vena cava inferior. En la mayoría de los casos, la compresión de la vena renal izquierda se produce entre la aorta y la arteria mesentérica superior, denominándose síndrome del cascanueces anterior. Con menor frecuencia, la vena renal izquierda se encuentra en posición retroaórtica por lo que ocurre la compresión entre la aorta y el cuerpo vertebral, denominándose entonces síndrome del cascanueces posterior. La clínica característica es de hematuria microscópica o más frecuentemente macroscópica, sobre todo después de estar en bipedestación o tras realizar ejercicio físico. La proteinuria ortostática o la combinación de hematuria y proteinuria, dolor abdominal y varicocele izquierdo pueden ser otras manifestaciones del síndrome.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The nutcracker syndrome is caused characterized by extrinsic compression of the left renal vein, which prevents its normal blood drainage in the inferior vein cava. In the majority of cases, compression of the left renal vein occurs between the aorta and the superior mesenteric artery, being called the anterior nutcracker syndrome. Less frequently, the left renal vein is in a retroaortic position, resulting in compression between the aorta and the vertebral body, which is called posterior nutcracker syndrome. The characteristic feature is microscopic hematuria or more often macroscopic, especially after being in a standing position or after physical exercise. Orthostatic proteinuria or the combination of hematuria and proteinuria, abdominal pain and left varicocele may be other manifestations of the syndrome.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Hematuria]]></kwd>
<kwd lng="es"><![CDATA[Síndrome de cascanueces]]></kwd>
<kwd lng="en"><![CDATA[Haematuria]]></kwd>
<kwd lng="en"><![CDATA[Nutcracker syndrome]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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