<?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>1134-8046</journal-id>
<journal-title><![CDATA[Revista de la Sociedad Española del Dolor]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Soc. Esp. Dolor]]></abbrev-journal-title>
<issn>1134-8046</issn>
<publisher>
<publisher-name><![CDATA[Inspira Network Group, S.L ]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1134-80462021000500242</article-id>
<article-id pub-id-type="doi">10.20986/resed.2021.3924/2021</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Schwannoma de plexo braquial y toxina botulínica: a propósito de un caso]]></article-title>
<article-title xml:lang="en"><![CDATA[Brachial plexus schwannoma and botulinum toxin: a case report]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bella Romera]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bonet Beltrán]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mira Puerto]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Duart Oltra]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Moreno Rodríguez]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sala Francino]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital Universitari Arnau de Vilanova Servicio de Oncología Radioterápica ]]></institution>
<addr-line><![CDATA[Lleida ]]></addr-line>
<country>España</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Hospital Universitari Sant Joan Servicio de Anestesiología, Reanimación y Terapéutica del Dolor Unidad de Dolor]]></institution>
<addr-line><![CDATA[Reus, Tarragona ]]></addr-line>
<country>España</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2021</year>
</pub-date>
<volume>28</volume>
<numero>4</numero>
<fpage>242</fpage>
<lpage>245</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_arttext&amp;pid=S1134-80462021000500242&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_abstract&amp;pid=S1134-80462021000500242&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_pdf&amp;pid=S1134-80462021000500242&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Los schwannomas de plexo braquial son tumoraciones desarrolladas a partir de las vainas neurales de rara presentación, pero evolución benigna. Pueden ocasionar clínica, generalmente de tipo neuropático, por crecimiento local con el consiguiente efecto compresivo de estructuras neurales nobles como las raíces del plexo braquial. La toxina botulínica es una neurotoxina sintetizada por la bacteria clostridium botulinum. Su mecanismo de acción consiste en bloquear selectivamente los receptores colinérgicos de la unión neuromuscular, produciendo una parálisis neuromuscular temporal y reversible, recuperando la función en aproximadamente tres a seis meses. Presentamos el caso de un paciente diagnosticado de schwannoma de plexo braquial con efecto compresivo creciente, a quien se le plantea tratamiento con toxina botulínica en los músculos escalenos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Brachial plexus schwannomas are tumors developed from the neural sheaths of rare presentation, but benign evolution. They can cause symptoms, generally of the neuropathic type, due to local growth with the consequent compressive effect of noble neural structures such as the roots of the brachial plexus. Botulinum toxin is a neurotoxin synthesized by the bacterium Clostridium Botulinum. Its mechanism of action consists of selectively blocking the cholinergic receptors of the neuromuscular junction, producing a temporary and reversible neuromuscular paralysis, recovering function in approximately three to six months. We present the case of a patient diagnosed with brachial plexus schwannoma with increasing compre­ssive effect who was treated with botulinum toxin in the scalene muscles.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Schwannoma]]></kwd>
<kwd lng="es"><![CDATA[plexo braquial]]></kwd>
<kwd lng="es"><![CDATA[toxina botulínica A]]></kwd>
<kwd lng="en"><![CDATA[Schwannoma]]></kwd>
<kwd lng="en"><![CDATA[brachial plexus]]></kwd>
<kwd lng="en"><![CDATA[botulinum a toxine]]></kwd>
</kwd-group>
</article-meta>
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