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Letter to the Editor
Progressive myoclonus epilepsies: description of a case of Lafora disease with autopsy
Epilepsia mioclónica progresiva: Descripción de un caso de enfermedad de Lafora con autopsia
P.E. Jiménez Caballero
Servicio de Neurología, Hospital San Pedro de Alcántara, Cáceres, Spain
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    "textoCompleto" => "<span class="elsevierStyleSections"><p id="par0005" class="elsevierStylePara elsevierViewall">The term &#8216;progressive myoclonus epilepsy&#8217; &#40;PME&#41; refers to an array of clinical entities with heterogeneous causes&#46; They are characterised by different types of epileptic seizures &#40;mainly myoclonic&#41;&#44; intellectual impairment&#44; and other clinical manifestations mainly involving the cerebellum&#46;<a class="elsevierStyleCrossRefs" href="#bib0005"><span class="elsevierStyleSup">1&#44;2</span></a></p><p id="par0010" class="elsevierStylePara elsevierViewall">We present the case of a 15-year-old male whose gestation and birth were uneventful&#46; Psychomotor development and educational level were also normal until the age of 11&#46; He had a healthy brother 3 years older&#46; Their parents were not consanguineous&#44; although both were from the same village of some 1000 inhabitants&#46;</p><p id="par0015" class="elsevierStylePara elsevierViewall">At the age of 12&#44; the patient began to suffer episodes of disorientation lasting a few seconds&#44; which were interpreted as absence seizures&#46; During the following months&#44; he presented several generalised tonic-clonic seizures&#46; Cranial CT yielded normal results&#59; EEG revealed overall slowing of the background activity plus some diffuse spike-wave complexes&#46; Intermittent light stimulation generated a photoparoxysmal response at low frequencies&#46; Epileptic activity did not increase during stages of drowsiness&#46;</p><p id="par0020" class="elsevierStylePara elsevierViewall">He was initially diagnosed with juvenile myoclonus epilepsy and treated with valproic acid &#40;1500<span class="elsevierStyleHsp" style=""></span>mg per day&#41; associated with clonazepam &#40;40<span class="elsevierStyleHsp" style=""></span>mg per day&#41;&#46; Given the lack of response to medication&#44; doctors added phenobarbital &#40;90<span class="elsevierStyleHsp" style=""></span>mg per day&#41; and ethosuximide &#40;1000<span class="elsevierStyleHsp" style=""></span>mg per day&#41; to reduce generalised seizures and absence seizures&#44; respectively&#46;</p><p id="par0025" class="elsevierStylePara elsevierViewall">During the following 2 years&#44; the patient&#39;s epilepsy progressed unfavourably with increasingly frequent seizures&#46; His different types of epileptic seizures were classified as atypical absence seizures&#44; multifocal cortical myoclonus&#44; and generalised tonic-clonic seizures&#46; Doctors also observed declining academic performance with multiple cognitive deficits mainly affecting visuospatial and literacy abilities&#46; The patient was finally diagnosed with progressive myoclonus epilepsy based on the above symptoms&#46;</p><p id="par0030" class="elsevierStylePara elsevierViewall">General physical examination revealed no cutaneous stigmata &#40;phacomatosis&#41;&#44; visceromegalies&#44; or retinal cherry-red spots&#46; Neurological examination revealed bradypsychia and amnestic deficit for recent events&#46; Cranial nerves were normal&#44; except for horizontal nystagmus with quick phase following the direction of the gaze&#46; There were no relevant changes in the motor system or in sensitivity&#46; The patient presented truncal ataxia&#44; tremor in both hands that could be increased voluntarily&#44; dysarthria&#44; and bilateral dysmetria &#40;finger-to-nose test&#41;&#46;</p><p id="par0035" class="elsevierStylePara elsevierViewall">Analytical tests&#44; including a haemogram&#44; renal&#44; liver&#44; and thyroid profiles&#44; copper&#44; ceruloplasmin&#44; creatine kinase&#44; antineuronal antibodies&#44; and baseline and post-exercise lactate levels&#44; all yielded normal results&#46; Blood and urine amino acid levels were normal&#46; Results from the lysosomal enzyme study were also unremarkable&#46;</p><p id="par0040" class="elsevierStylePara elsevierViewall">Brain MRI showed moderate overall cerebral and cerebellar atrophy&#46;</p><p id="par0045" class="elsevierStylePara elsevierViewall">The EEG showed slow background activity with generalised epileptiform discharges manifesting as spike&#47;polyspike wave complexes of variable duration that persisted throughout the reading&#46; Intermittent light stimulation generated a photoparoxysmal response at low frequencies&#46; Epileptic activity did not increase during stages of drowsiness&#46;</p><p id="par0050" class="elsevierStylePara elsevierViewall">Striated muscle biopsy revealed no structural changes&#59; fibre diameters were moderately variable&#46; The basophilic intermyofibrillar network was increased by multiples fibres forming small round basophilic deposits&#44; which were PAS-positive according to enzymatic oxidation methods&#46;</p><p id="par0055" class="elsevierStylePara elsevierViewall">Axillary skin biopsies &#40;<a class="elsevierStyleCrossRef" href="#fig0005">Fig&#46; 1</a>A&#41; showed rounded intensely PAS-positive formations in the epithelial cells of the apocrine glands and in the ducts of the eccrine glands&#46; Both biopsies were compatible with Lafora disease&#46;</p><elsevierMultimedia ident="fig0005"></elsevierMultimedia><p id="par0060" class="elsevierStylePara elsevierViewall">Disease progression was aggressive&#44; with multiple generalised tonic-clonic&#44; myoclonic&#44; and partial seizures accompanied by visual symptoms that persisted in spite of treatment with several drug combinations&#46; He lost functional abilities to the point of becoming completely disabled&#59; nasogastric feeding was required since his frequent palatal myoclonias provoked difficulty swallowing&#46; He presented bladder and bowel incontinence and tetraparesis&#44; and became confined to bed and armchair&#46; He died of aspiration pneumonia 8 years after disease onset&#46;</p><p id="par0065" class="elsevierStylePara elsevierViewall">Autopsy revealed typical Lafora bodies in several areas of the central nervous system &#40;especially the thalamus and cerebellum&#41;&#44; the liver&#44; and the heart &#40;<a class="elsevierStyleCrossRef" href="#fig0005">Fig&#46; 1</a>B&#41;&#46;</p><p id="par0070" class="elsevierStylePara elsevierViewall">The most frequent causes of PME affecting most of the cases are Unverricht-Lundborg disease&#44; Lafora disease&#44; neuronal ceroid lipofuscinoses&#44; sialidosis&#44; and mitochondrial cytopathies &#40;myoclonus epilepsy with ragged red fibres&#44; MERRF&#41; &#40;<a class="elsevierStyleCrossRef" href="#tbl0005">Table 1</a>&#41;&#46;</p><elsevierMultimedia ident="tbl0005"></elsevierMultimedia><p id="par0075" class="elsevierStylePara elsevierViewall">Dr Rodr&#237;guez Lafora was the first to describe Lafora disease in 1911&#46;<a class="elsevierStyleCrossRef" href="#bib0015"><span class="elsevierStyleSup">3</span></a> It consists of a degenerative and progressive disorder of the central nervous system with a recessive autosomal inheritance pattern&#46; This disease presents no sex-related differences and it is predominantly found in southern European countries&#46;</p><p id="par0080" class="elsevierStylePara elsevierViewall">Lafora disease is clinically characterised by generalised tonic-clonic seizures&#44; myoclonias&#44; progressive mental decline&#44; and pyramidal&#44; extrapyramidal&#44; and cerebellar signs&#46;<a class="elsevierStyleCrossRef" href="#bib0020"><span class="elsevierStyleSup">4</span></a> It appears at the end of childhood or during adolescence &#40;6 to 20 years&#41; and it leads to death 10 years after the onset of the first symptoms&#46; The disease is caused by a homozygous EPM2 mutation linked to chromosome 6q23-25&#44; which codifies tyrosine phosphatase &#40;laforin&#41;&#44; a protein involved in the metabolic control of glycogen&#46;<a class="elsevierStyleCrossRef" href="#bib0025"><span class="elsevierStyleSup">5</span></a></p><p id="par0085" class="elsevierStylePara elsevierViewall">From a histological point of view&#44; it is characterised by the presence of intracytoplasmic inclusion bodies in organs such as the liver&#44; heart&#44; and brain&#46; They are especially common in biopsies of axillary skin&#46;<a class="elsevierStyleCrossRef" href="#bib0030"><span class="elsevierStyleSup">6</span></a> These bodies include glucose polymers &#40;polyglucosan&#41; and their presence in an axillary skin biopsy is considered nearly pathognomonic&#46;</p><p id="par0090" class="elsevierStylePara elsevierViewall">Myoclonias become continuous during waking hours&#59; they are resistant to antiepileptic medication and usually associated with occipital lobe seizure&#46; Occipital seizures are characterised by simple visual hallucinations that are sometimes complex&#46; These hallucinations are typical of Lafora disease&#46; The onset of myoclonias coincides with progressive deterioration of cortical function and ataxia&#46;</p><p id="par0095" class="elsevierStylePara elsevierViewall">On rare occasions&#44; electroencephalographic manifestations may appear prior to symptom onset&#46; They are characterised by increasingly frequent spike- or polyspike-wave paroxysms&#46; Subsequently&#44; the baseline record becomes slower and more disorganised&#46; Paroxysms caused by intermittent light stimulation grow more frequent and gradually become continuous&#59; photoparoxysmal response is typical at low frequencies&#46;<a class="elsevierStyleCrossRef" href="#bib0035"><span class="elsevierStyleSup">7</span></a> Unlike in juvenile myoclonus epilepsy&#44; epileptic anomalies do not increase during sleep in initial stages of Lafora disease&#46;</p><p id="par0100" class="elsevierStylePara elsevierViewall">Brain MRI shows no relevant changes in initial and intermediate stages of the disease&#59; final stages are characterised by cerebral and cerebellar atrophy&#46;<a class="elsevierStyleCrossRef" href="#bib0040"><span class="elsevierStyleSup">8</span></a></p><p id="par0105" class="elsevierStylePara elsevierViewall">In theory&#44; doctors can offer genetic counselling and establish a prenatal diagnosis when the genetic anomaly has been detected in a family member&#46;<a class="elsevierStyleCrossRef" href="#bib0045"><span class="elsevierStyleSup">9</span></a></p><p id="par0110" class="elsevierStylePara elsevierViewall">In conclusion&#44; doctors should assign a suspected diagnosis of Lafora disease when a young patient &#40;in late childhood or adolescence&#41; begins experiencing myoclonias followed by ataxia and progressive cognitive decline with no evidence of structural changes in neuroimaging tests and no metabolic changes in the analytical study&#46;<a class="elsevierStyleCrossRef" href="#bib0050"><span class="elsevierStyleSup">10</span></a></p></span>"
    "pdfFichero" => "main.pdf"
    "tienePdf" => true
    "fechaRecibido" => "2012-02-08"
    "fechaAceptado" => "2012-04-22"
    "NotaPie" => array:1 [
      0 => array:2 [
        "etiqueta" => "&#9734;"
        "nota" => "<p class="elsevierStyleNotepara" id="npar0005">Please cite this article as&#58; Jim&#233;nez Caballero PE&#46; Epilepsia miocl&#243;nica progresiva&#58; Descripci&#243;n de un caso de enfermedad de Lafora con autopsia&#46; Neurolog&#237;a&#46; 2013&#59;28&#58;584&#8211;586&#46;</p>"
      ]
    ]
    "multimedia" => array:2 [
      0 => array:7 [
        "identificador" => "fig0005"
        "etiqueta" => "Figure 1"
        "tipo" => "MULTIMEDIAFIGURA"
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        "mostrarDisplay" => false
        "figura" => array:1 [
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        "descripcion" => array:1 [
          "en" => "<p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">&#40;A&#41; Axillary skin biopsy &#40;PAS stain&#44; 2<span class="elsevierStyleHsp" style=""></span>&#215;<span class="elsevierStyleHsp" style=""></span>400 magnification&#41; showing round-shaped intensely PAS-positive formations in the epithelial cells of the apocrine glands and in the ducts of the eccrine glands which correspond to Lafora bodies&#46; &#40;B&#41; Heart &#40;PAS stain&#44; 1<span class="elsevierStyleHsp" style=""></span>&#215;<span class="elsevierStyleHsp" style=""></span>200 magnification&#41;&#46; Multiple Lafora bodies in myocytes&#46;</p>"
        ]
      ]
      1 => array:7 [
        "identificador" => "tbl0005"
        "etiqueta" => "Table 1"
        "tipo" => "MULTIMEDIATABLA"
        "mostrarFloat" => true
        "mostrarDisplay" => false
        "tabla" => array:2 [
          "leyenda" => "<p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">AD&#58; autosomal dominant&#59; AR&#58; autosomal recessive&#59; MERRF&#58; myoclonus epilepsy with ragged red fibres&#46;</p>"
          "tablatextoimagen" => array:1 [
            0 => array:2 [
              "tabla" => array:1 [
                0 => """
                  <table border="0" frame="\n
                  \t\t\t\t\tvoid\n
                  \t\t\t\t" class=""><thead title="thead"><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" style="border-bottom: 2px solid black">Progressive myoclonic epilepsy&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" style="border-bottom: 2px solid black">Inheritance&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" style="border-bottom: 2px solid black">Age at onset&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" style="border-bottom: 2px solid black">Indicative symptoms&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" style="border-bottom: 2px solid black">Pathological patterns&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" style="border-bottom: 2px solid black">Gene&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr></thead><tbody title="tbody"><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Unverricht-Lundborg disease&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">AR&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">6&#8211;15&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Slow progression&#44; mild and late-onset cerebellar impairment&#59; absence of dementia&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">None&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">CSTB &#40;PME&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Lafora disease&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">RA&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">6&#8211;19&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Visual symptoms&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Polyglucosan inclusions &#40;Lafora bodies&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">EMP2AEMP2B&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">MERRF&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Maternal&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Any age&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Lactic acidosis&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Ragged red fibres&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">MT-TK &#40;tRNALys&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Neuronal ceroid lipofuscinoses&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">AR or AD&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Variable&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Macular degeneration and visual impairment &#40;except in the adult form&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Lipopigment deposits&#58; granular osmiophilic&#44; curvilinear&#44; or fingerprint-like shapes&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Various&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Sialidosis&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">AR&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">8&#8211;15&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Gradual cerebellar changes&#59; maculopathy with cherry-red spot&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Oligosaccharide deficiency in urine and neuraminidase deficiency in fibroblasts&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">NEU1&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr></tbody></table>
                  """
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          "en" => "<p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">Differential diagnosis of progressive myoclonic epilepsies&#46;</p>"
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    ]
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      "titulo" => "References"
      "seccion" => array:1 [
        0 => array:2 [
          "identificador" => "bibs0005"
          "bibliografiaReferencia" => array:10 [
            0 => array:3 [
              "identificador" => "bib0005"
              "etiqueta" => "1"
              "referencia" => array:1 [
                0 => array:2 [
                  "contribucion" => array:1 [
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                          ]
                        ]
                      ]
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                  ]
                  "host" => array:1 [
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            ]
            1 => array:3 [
              "identificador" => "bib0010"
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              "referencia" => array:1 [
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                          ]
                        ]
                      ]
                    ]
                  ]
                  "host" => array:1 [
                    0 => array:2 [
                      "doi" => "10.1056/NEJM198607313150506"
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                          0 => array:2 [
                            "url" => "https://www.ncbi.nlm.nih.gov/pubmed/3088452"
                            "web" => "Medline"
                          ]
                        ]
                      ]
                    ]
                  ]
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              ]
            ]
            2 => array:3 [
              "identificador" => "bib0015"
              "etiqueta" => "3"
              "referencia" => array:1 [
                0 => array:2 [
                  "contribucion" => array:1 [
                    0 => array:2 [
                      "titulo" => "Epilepsias miocl&#243;nicas en el ni&#241;o y el adolescente"
                      "autores" => array:1 [
                        0 => array:2 [
                          "etal" => false
                          "autores" => array:3 [
                            0 => "A&#46;J&#46; Pozo Alonso"
                            1 => "D&#46; Pozo Lauzan"
                            2 => "D&#46; Pozo Alonso"
                          ]
                        ]
                      ]
                    ]
                  ]
                  "host" => array:1 [
                    0 => array:1 [
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                ]
              ]
            ]
            3 => array:3 [
              "identificador" => "bib0020"
              "etiqueta" => "4"
              "referencia" => array:1 [
                0 => array:2 [
                  "contribucion" => array:1 [
                    0 => array:2 [
                      "titulo" => "Estado epil&#233;ptico no convulsivo asociado a enfermedad de Lafora&#58; presentaci&#243;n de dos casos"
                      "autores" => array:1 [
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ISSN: 21735808
Original language: English
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