<?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>0120-8748</journal-id>
<journal-title><![CDATA[Acta Neurológica Colombiana]]></journal-title>
<abbrev-journal-title><![CDATA[Acta Neurol Colomb.]]></abbrev-journal-title>
<issn>0120-8748</issn>
<publisher>
<publisher-name><![CDATA[Asociación Colombiana de Neurología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0120-87482021000300069</article-id>
<article-id pub-id-type="doi">10.22379/24224022369</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Pseudoatetosis de los miembros superiores como manifestación del déficit de vitamina B12: a propósito de un caso]]></article-title>
<article-title xml:lang="en"><![CDATA[Pseudoathetosis of the upper limbs as a manifestation of vitamin B12 deficit: about a case]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Parra]]></surname>
<given-names><![CDATA[Angie Viviana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramirez]]></surname>
<given-names><![CDATA[Sergio Francisco]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Castillo]]></surname>
<given-names><![CDATA[Gabriel Augusto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Patiño-Rodríguez]]></surname>
<given-names><![CDATA[Hernán Mauricio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Moreno]]></surname>
<given-names><![CDATA[Julio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vargas-Jaramillo]]></surname>
<given-names><![CDATA[Juan Diego]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Fundación Universitaria de ciencias de la Salud Departamento de Neurología ]]></institution>
<addr-line><![CDATA[Bogotá D.C]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Fundación Universitaria de ciencias de la Salud Departamento de Neurología ]]></institution>
<addr-line><![CDATA[Bogotá D.C]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Fundación Universitaria de Ciencias de la Salud Departamento de Neurología ]]></institution>
<addr-line><![CDATA[Bogotá D.C]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Fundación Universitaria de Ciencias de la Salud Departamento de Neurología ]]></institution>
<addr-line><![CDATA[Bogotá D.C]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Fundación Universitaria de Ciencias de la Salud Departamento de Neurología ]]></institution>
<addr-line><![CDATA[Bogotá D.C]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af6">
<institution><![CDATA[,Fundación Universitaria de Ciencias de la Salud Departamento de Neurología ]]></institution>
<addr-line><![CDATA[Bogotá D.C]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<volume>37</volume>
<numero>2</numero>
<fpage>69</fpage>
<lpage>74</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0120-87482021000300069&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0120-87482021000300069&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0120-87482021000300069&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  INTRODUCCIÓN:  La ganglionopatía sensitiva es una rara complicación del déficit de vitamina B12, la cual da origen a un espectro de síntomas neurológicos que incluyen alteración de la sensibilidad vibratoria, propiocepción, ataxia y, con menor frecuencia, trastornos del movimiento. La pseudoatetosis es una presentación muy inusual.  CASO CLÍNICO: Un paciente masculino de 73 años se presenta con parestesias y torpeza de las cuatro extremidades, dolor tipo urente en plantas de pies y manos, inestabilidad postural y limitación para la marcha. En la exploración neurológica se encuentra hipoestesia y ataxia sensitiva de las cuatro extremidades, con presencia de pseudoatetosis de los miembros superiores como consecuencia de ganglionopatía por déficit de vitamina B12 demostrada por la imagen típica de "V" invertida, debido a compromiso de las proyecciones centrales las neuronas sensitivas mielinizadas en RMN de columna cervicotoráccica. A los cuatro meses se reporta mejoría del déficit propioceptivo y corrección del trastorno de movimiento gracias a la reposición de la cianocobalamina intramuscular. Hasta el momento no se presenta patología neoplásica, autoinmune o infecciosa.  CONCLUSIONES: La ganglionopatía sensitiva por déficit de vitamina B12 es una condición potencialmente reversible y subdiagnosticada que puede manifestarse ocasionalmente con trastornos del movimiento. Debe sospecharse en pacientes con déficits sensitivos por compromiso de fibra gruesa. Su pronóstico es favorable si la causa del déficit se documenta tempranamente y se hace reposición de dicha vitamina.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[SUMMARY  INTRODUCTION:  Sensory ganglionopathy is a rare complication of vitamin B12 deficiency, causing an spectrum of neurologic symptoms such as abnormal vibratory sensitivity, proprioception, gait disturbance and rarely movement disorders like pseudoatetosis and dystonia.  CLINICAL CASE: A73-year-old man was admitted with numbness and clumsiness of his extremities, burning pain on palms and soles, postural instability and impaired walking. Neurological examination demonstrated hypesthesia and sensory ataxia of four limbs with associated pseudo athetoid movements of the upper limbs as a consequence of ganglionopathy by vitamin B12 deficiency, showing typical MRI inverted "V" sign due to degeneration of central projections from large sensory neurons, which was successfully treated with IM cyanocobalamin 4 months later.  CONCLUSIONS: Sensory ganglionopathy in B12 deficit is a potentially reversible and underdiagnosed condition, which occasionally can present with movement disorders. Must be suspected in patiens presenting with sensory deficits depending on richly myelinated axons. Usually with good prognosis after identifying the deficit's cause and giving propper treatment.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[atetosis]]></kwd>
<kwd lng="es"><![CDATA[distoma]]></kwd>
<kwd lng="es"><![CDATA[deficiencia de vitamina B12]]></kwd>
<kwd lng="es"><![CDATA[ataxia]]></kwd>
<kwd lng="es"><![CDATA[sistema nervioso periférico]]></kwd>
<kwd lng="es"><![CDATA[trastornos del movimiento (DeCS)]]></kwd>
<kwd lng="en"><![CDATA[athetosis]]></kwd>
<kwd lng="en"><![CDATA[dystonia]]></kwd>
<kwd lng="en"><![CDATA[movement disorders]]></kwd>
<kwd lng="en"><![CDATA[ataxia]]></kwd>
<kwd lng="en"><![CDATA[peripheral nervous system]]></kwd>
<kwd lng="en"><![CDATA[vitamin B12 deficiency (MeSH)]]></kwd>
</kwd-group>
</article-meta>
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