<?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>2007-4085</journal-id>
<journal-title><![CDATA[Revista mexicana de urología]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. urol.]]></abbrev-journal-title>
<issn>2007-4085</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Urología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-40852019000200006</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Litiasis uretral como causa de retención aguda de orina en un paciente pediátrico]]></article-title>
<article-title xml:lang="en"><![CDATA[A urethral stone as the cause of acute urinary retention in a pediatric patient]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Maldonado]]></surname>
<given-names><![CDATA[Adrián Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Manzo-Pérez]]></surname>
<given-names><![CDATA[Gildardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vanzzini-Guerrero]]></surname>
<given-names><![CDATA[Marco Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Manzo-Pérez]]></surname>
<given-names><![CDATA[Braulio Omar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Marte Aracena]]></surname>
<given-names><![CDATA[Eva María]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sánchez-López]]></surname>
<given-names><![CDATA[Héctor Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital Regional de Alta Especialidad del Bajío  ]]></institution>
<addr-line><![CDATA[León Guanajuato]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2019</year>
</pub-date>
<volume>79</volume>
<numero>2</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-40852019000200006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-40852019000200006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-40852019000200006&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Antecedentes: Si bien la retención aguda de orina es una emergencia urológica común, rara vez se encuentra en niños; en cuyos casos generalmente se ha asociado con una amplia variedad de causas: obstrucción mecánica (piedras o estenosis), estreñimiento, infección e inflamación, impactación fecal, enfermedades neurológicas y ginecológicas, malignidad o etiología conductual e idiopática, entre otros.  Caso Clínico: Un niño de dos años, sin antecedentes familiares de cálculos renales, que comienza con dolor abdominal repentino acompañado de llanto durante la micción. Se realizó una cistostomía en urgencias y fue enviado para valoración por el especialista a nuestro centro. El examen físico reveló un cuerpo extraño en la uretra, por lo que se realizó una uretrocistoscopia de forma inmediata, con un uretrocistoscopio pediátrico, encontrando un cálculo en uretra anterior.  Discusión: Los cálculos urinarios en niños son una patología poco común y es rara como la causa de la retención aguda de orina (2%). Es más común en niños y en la uretra anterior. Aquellos con cálculos uretrales posteriores tienen goteo urinario continuo, y los pacientes con cálculos uretrales anteriores tienen retención urinaria aguda. El uso de equipos endoscópicos es seguro en la resolución de los cálculos uretrales y, si está disponible, debe considerarse como la primera opción de tratamiento.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background: Acute urinary retention is a common urologic emergency. It rarely presents in children, in whom it has been associated with a wide variety of causes, such as mechanical obstruction (stones or strictures), constipation, infection and inflammation, fecal impaction, neurologic and gynecologic diseases, malignancy, or behavioral or idiopathic etiology, among others.  Clinical case: A 2-year-old boy, with no family history of kidney stones, presented with sudden abdominal pain accompanied by crying during micturition. Cystostomy was performed in the emergency room and the patient was referred to the specialist at our hospital center for evaluation. Physical examination revealed a foreign body in the urethra. Urethrocystoscopy was immediately carried out with a pediatric urethrocystoscope, and a stone in the anterior urethra was found.  Discussion: Urinary stones in children are an uncommon pathology and are rarely a cause of acute urinary retention (2%). It is more common in boys and in the anterior urethra. Pediatric patients with posterior urethral stones have continuous urine dripping and those with anterior urethral stones present with acute urinary retention. The use of endoscopic equipment is safe for resolving urethral stones and should be considered the first treatment option, when available.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Urethra]]></kwd>
<kwd lng="en"><![CDATA[Stone]]></kwd>
<kwd lng="en"><![CDATA[Lithiasis]]></kwd>
<kwd lng="en"><![CDATA[Urinary tract]]></kwd>
<kwd lng="es"><![CDATA[uretra]]></kwd>
<kwd lng="es"><![CDATA[cálculo]]></kwd>
<kwd lng="es"><![CDATA[litiasis]]></kwd>
<kwd lng="es"><![CDATA[tracto urinario]]></kwd>
</kwd-group>
</article-meta>
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