<?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>0121-8123</journal-id>
<journal-title><![CDATA[Revista Colombiana de Reumatología]]></journal-title>
<abbrev-journal-title><![CDATA[Rev.Colomb.Reumatol.]]></abbrev-journal-title>
<issn>0121-8123</issn>
<publisher>
<publisher-name><![CDATA[Asociación Colombiana de Reumatología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0121-81232015000300007</article-id>
<article-id pub-id-type="doi">10.1016/j.rcreu.2015.06.003</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Poliangeítis granulomatosa con eosinofilia. Revisión y reporte de caso de una paciente con eosinofilia, mononeuropatía de miembro inferior, rinosinusitis y asma]]></article-title>
<article-title xml:lang="en"><![CDATA[Eosinophilic granulomatosis with polyangiitis, Review and case report of a patient with eosinophilia, lower limb mononeuropathy, sinusitis and asthma]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sánchez Betancourt]]></surname>
<given-names><![CDATA[Alfredo]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González Cole]]></surname>
<given-names><![CDATA[Milagros]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidad San Judas Tadeo  ]]></institution>
<addr-line><![CDATA[San José ]]></addr-line>
<country>Costa Rica</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>07</month>
<year>2015</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>07</month>
<year>2015</year>
</pub-date>
<volume>22</volume>
<numero>3</numero>
<fpage>180</fpage>
<lpage>185</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0121-81232015000300007&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0121-81232015000300007&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0121-81232015000300007&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[La poliangeítis granulomatosa con eosinofilia es una enfermedad infrecuente, fuertemente asociada al asma y a la sinusitis. Debido a que las manifestaciones de la enfermedad se generan en diferentes fases, el diagnóstico no siempre se realiza de forma oportuna con serias consecuencias para los pacientes. Esta enfermedad presenta manifestaciones cutáneas, respiratorias, cardiacas, otorrinolaringológicas, neurológicas y renales, entre otras. Presentamos el caso de una paciente femenina de 26 arios de edad, portadora de una rino-sinusitis atópica desde la infancia, vitíligo y asma de inicio reciente, por lo cual consultó en múltiples ocasiones a diferentes servicios de urgencias por broncoespasmos y eosinofilia. Posteriormente desarrolló una neuropatía periférica de la extremidad inferior, que fue valorada en un hospital de la ciudad de San José. Se realizó igualmente una revisión bibliográfica del tema.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Eosinophilic granulomatosis with polyangiitis is a rare disease frequently associated with asthma and sinusitis. This condition poses a challenge for clinicians because it manifests itself in different phases, as there is often a delay in the diagnosis, with serious consequences for the patients. There are a wide variety of clinical manifestations of the disease such as cutaneous, respiratory, cardiac, ENT, neurological, and renal involvement, to name a few. A case report is presented involving a 26 year old female with a history of chronic rhinosi-nusitis, vitiligo, and recent onset asthma who was seen in the emergency department a San José hospital on many occasions with bronchospasm and eosinophilia. She later developed a peripheral neuropathy in her lower extremity. A literature review on the subject is also presented.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Vasculitis]]></kwd>
<kwd lng="es"><![CDATA[Granulomatosis eosinofílica]]></kwd>
<kwd lng="es"><![CDATA[Churg-Strauss]]></kwd>
<kwd lng="es"><![CDATA[Neuropatía periférica]]></kwd>
<kwd lng="es"><![CDATA[Vasculitis ANCA positivas]]></kwd>
<kwd lng="es"><![CDATA[Poliangeítis]]></kwd>
<kwd lng="en"><![CDATA[Vasculitis]]></kwd>
<kwd lng="en"><![CDATA[Eosinophilic granulomatosis]]></kwd>
<kwd lng="en"><![CDATA[Churg-Strauss]]></kwd>
<kwd lng="en"><![CDATA[Peripheral neuropathy]]></kwd>
<kwd lng="en"><![CDATA[ANCA positive vasculitis]]></kwd>
<kwd lng="en"><![CDATA[Polyangiitis]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[  <font size="2" face="Verdana">      <p><a href="http://dx.doi.org/10.1016/j.rcreu.2015.06.003" target="_blank">http://dx.doi.org/10.1016/j.rcreu.2015.06.003</a></p>      <p><b>Informe de caso</b></p>      <p align="center"><font size="4"><b>Poliange&iacute;tis granulomatosa con eosinofilia. Revisi&oacute;n y reporte de caso de una paciente con eosinofilia, mononeuropat&iacute;a de miembro inferior, rinosinusitis y asma</b></font></p>      <p align="center"><font size="3"><b>Eosinophilic granulomatosis with polyangiitis, Review and case report of a patient with eosinophilia, lower limb mononeuropathy, sinusitis and asthma</b></font></p>       <p align="center"><b><i>Alfredo S&aacute;nchez Betancourt</i></b><sup>a,*</sup><b><i> y Milagros Gonz&aacute;lez Cole</i></b><sup>a</sup></p>      <p><sup>a</sup> <i>Universidad San Judas Tadeo, San Jos&eacute;, Costa Rica</i></p>      <p><sup>*</sup> Autor para correspondencia. Correo electr&oacute;nico: <a href="mailto:drsanchez@usanjudas.ac.cr">drsanchez@usanjudas.ac.cr</a> (A. S&aacute;nchez Betancourt). </p>       <p><i>Historia del art&iacute;culo: </i>Recibido el 24 de abril de 2015 Aceptado el 25 de junio de 2015 <i>On-line </i>el 16 de agosto de 2015</p>   <hr>      <p><font size="3"><b>Resumen</b></font></p>      ]]></body>
<body><![CDATA[<p>La poliange&iacute;tis granulomatosa con eosinofilia es una enfermedad infrecuente, fuertemente asociada al asma y a la sinusitis. Debido a que las manifestaciones de la enfermedad se generan en diferentes fases, el diagn&oacute;stico no siempre se realiza de forma oportuna con serias consecuencias para los pacientes. Esta enfermedad presenta manifestaciones cut&aacute;neas, respiratorias, cardiacas, otorrinolaringol&oacute;gicas, neurol&oacute;gicas y renales, entre otras. Presentamos el caso de una paciente femenina de 26 arios de edad, portadora de una rino-sinusitis at&oacute;pica desde la infancia, vit&iacute;ligo y asma de inicio reciente, por lo cual consult&oacute; en m&uacute;ltiples ocasiones a diferentes servicios de urgencias por broncoespasmos y eosinofilia. Posteriormente desarroll&oacute; una neuropat&iacute;a perif&eacute;rica de la extremidad inferior, que fue valorada en un hospital de la ciudad de San Jos&eacute;. Se realiz&oacute; igualmente una revisi&oacute;n bibliogr&aacute;fica del tema.</p>       <p><i><b>Palabras clave</b>: </i>Vasculitis, Granulomatosis eosinof&iacute;lica, Churg-Strauss, Neuropat&iacute;a perif&eacute;rica, Vasculitis ANCA positivas, Poliange&iacute;tis.</p>  <hr>      <p><font size="3"><b>Abstract</b></font></p>       <p>Eosinophilic granulomatosis with polyangiitis is a rare disease frequently associated with asthma and sinusitis. This condition poses a challenge for clinicians because it manifests itself in different phases, as there is often a delay in the diagnosis, with serious consequences for the patients. There are a wide variety of clinical manifestations of the disease such as cutaneous, respiratory, cardiac, ENT, neurological, and renal involvement, to name a few. A case report is presented involving a 26 year old female with a history of chronic rhinosi-nusitis, vitiligo, and recent onset asthma who was seen in the emergency department a San Jos&eacute; hospital on many occasions with bronchospasm and eosinophilia. She later developed a peripheral neuropathy in her lower extremity. A literature review on the subject is also presented.</p>      <p><i><b>Keywords</b>: </i>Vasculitis, Eosinophilic granulomatosis, Churg-Strauss, Peripheral neuropathy, ANCA positive vasculitis, Polyangiitis.</p>   <hr>      <p><font size="3"><b>Introducci&oacute;n</b></font></p>      <p>La poliange&iacute;tis granulomatosa con eosinofilia fue descrita por primera vez por los pat&oacute;logos Jacob Churg y Lotte Strauss<sup>1</sup>, pertenecientes al Hospital Mount Sinai de la ciudad de Nueva York, en 1951, posterior a la revisi&oacute;n de 13 casos con presentaci&oacute;n similar.</p>      <p>El ep&oacute;nimo &laquo;s&iacute;ndrome de Churg-Strauss&raquo; fue reemplazado debido a que se cre&oacute; una sola nomenclatura para las poliange&iacute;tis.</p>      <p>Es una enfermedad infrecuente; su incidencia en Estados Unidos es de 1-3 casos por 100.000 adultos<sup>2</sup>, y su prevalencia es de 6,8 casos por mill&oacute;n<sup>3</sup>. Tiende a afectar m&aacute;s a hombres que a mujeres, con una edad media de presentaci&oacute;n de 45,5 a&ntilde;os, y es m&aacute;s frecuente en personas de ascendencia europea<sup>4</sup>. Para este art&iacute;culo se realiz&oacute; una revisi&oacute;n del material bibliogr&aacute;fico publicado en Costa Rica y no se logr&oacute; encontrar otro reporte de esta enfermedad.</p>      <p>Se considera como una vasculitis de peque&ntilde;os y medianos vasos<sup>5</sup>, asociada a eosinofilia, granulomas necrosantes y asma<sup>5</sup>.</p>      ]]></body>
<body><![CDATA[<p>En su evoluci&oacute;n natural la enfermedad cuenta con 3 fases: la asm&aacute;tica o prodr&oacute;mica, la eosinof&iacute;lica y la vascul&iacute;tica<sup>6</sup> .Cada fase cuenta con una variaci&oacute;n en la presentaci&oacute;n cl&iacute;nica del cuadro, lo cual dificulta su diagn&oacute;stico. El uso de f&aacute;rmacos inhibidores de los leucotrienos y anti-IgE<sup>7</sup> se ha visto asociado con el inicio de la enfermedad<sup>8,9</sup>.</p>      <p>Existen criterios diagn&oacute;sticos propuestos por el <i>American College of Rheumatology </i>(ACR) (<a href="#tab1">tabla 1</a>). La presencia de 4 o m&aacute;s criterios provee una sensibilidad del 85% y una especificidad del 99,7%<sup>10</sup>.</p>     <p align="center"><a name="tab1"><img src="img/revistas/rcre/v22n3/v22n3a07t1.jpg"></a></p>       <p>A continuaci&oacute;n presentamos el caso de una paciente femenina portadora de asma bronquial y rinosinusitis de larga data, que inici&oacute; con una neuropat&iacute;a perif&eacute;rica e hipereosinofilia.</p>      <p><font size="3"><b>Presentaci&oacute;n de caso</b></font></p>      <p>Se trata de una paciente femenina de 26 a&ntilde;os de edad, portadora de una rinosinusitis at&oacute;pica desde la infancia, vit&iacute;ligo y asma de inicio reciente (un a&ntilde;o), por lo cual consult&oacute; en m&uacute;ltiples ocasiones a diferentes servicios de urgencias por broncoespasmos. Se le design&oacute; un esquema terap&eacute;utico con salbutamol inhalado, beclometasona y montelukast.</p>      <p>Tres meses previos a su diagn&oacute;stico definitivo, consulta por un dolor precordial, que fue catalogado como costocondritis y manejado de forma ambulatoria. En ese mismo mes es internada en un centro m&eacute;dico debido a una neumon&iacute;a adquirida en la comunidad y a una crisis asm&aacute;tica persistente. Se le efectu&oacute; un hemograma, que arroj&oacute; una eosinofilia del 46% con escasa leucocitosis. La eosinofilia el d&iacute;a siguiente fue del 67%. Se le realiza una velocidad de eritrosedimentaci&oacute;n, que es reportada como de 51 mm/h. La paciente fue tratada con anti-bioterapia y broncodilatadores, y al quinto d&iacute;a fue egresada con escasas sibilancias y sin dificultad respiratoria.</p>      <p>Dos meses antes del diagn&oacute;stico, fue valorada por el servicio de neurolog&iacute;a por una lumboci&aacute;tica izquierda y se not&oacute; que presentaba una abolici&oacute;n del reflejo aquiliano izquierdo. A la vez inici&oacute; con una lesi&oacute;n cut&aacute;nea eritematosa, pruriginosa, de aspecto viol&aacute;ceo, que parec&iacute;a ser una &laquo;picadura de insecto&raquo;.</p>      <p>Inici&oacute; con parestesias y espasmos musculares en el pie izquierdo, una semana despu&eacute;s manifest&oacute; dolor en la pantorrilla de la misma extremidad que le imped&iacute;a deambular, por lo cual fue internada en el servicio de Medicina Interna del Hospital M&eacute;xico. Se le practic&oacute; una resonancia magn&eacute;tica, que descart&oacute; la presencia de una hernia discal. En esa misma instancia se le practic&oacute; un estudio de velocidad de conducci&oacute;n nerviosa, que arroj&oacute; una denervaci&oacute;n aguda activa del nervio ci&aacute;tico, com&uacute;n solamente en los m&uacute;sculos inervados por este por debajo de la rodilla.</p>      <p>Por el antecedente de dolor precordial se le realiz&oacute; una eco-cardiograf&iacute;a, que mostr&oacute; una disminuci&oacute;n de la contractilidad cardiaca de forma difusa, una fracci&oacute;n de eyecci&oacute;n de 32-29% y una insuficiencia mitral leve.</p>      ]]></body>
<body><![CDATA[<p>Durante este internamiento la paciente presentaba dificultad respiratoria, con broncoespasmos y hemoptisis, por lo que se solicit&oacute; una tomograf&iacute;a de t&oacute;rax, la cual mostr&oacute; infiltrados parenquimatosos difusos con predominio perif&eacute;rico, m&aacute;s abundante en pulm&oacute;n derecho, engrosamiento bronquial y opacidades con aspecto de &laquo;vidrio esmerilado&raquo; (<a href="#fig1">figs. 1 y 2</a>).</p>      <p align="center"><a name="fig1"><img src="img/revistas/rcre/v22n3/v22n3a07f1.jpg"></a></p>      <p>Se le realiza una serie de ex&aacute;menes de laboratorio, los cuales muestran los siguientes resultados relevantes:</p>      <p>Anemia normoc&iacute;tica y normocr&oacute;mica, eosinofilia del 55%, IL-2 e IL-6 elevadas, IgE elevada, factor reumatoide positivo, interfer&oacute;n alfa elevado y p-ANCA positivo (1/40, MPO+).</p>      <p>La paciente cumple con 5 de los 6 criterios del ACR, por lo cual se diagnostica como una vasculitis granulomatosa eosinof&iacute;lica o s&iacute;ndrome de Churg-Strauss.</p>      <p>Se inicia tratamiento con corticosteroides a altas dosis, con una buena respuesta terap&eacute;utica, generando una normalizaci&oacute;n de los marcadores serol&oacute;gicos un mes despu&eacute;s del inicio del tratamiento (VES: 5 mm/h; eosin&oacute;filos en sangre: 3%).</p>      <p><font size="3"><b>Manifestaciones cl&iacute;nicas</b></font></p>      <p><b><i>Pulmonares</i></b></p>      <p>La manifestaci&oacute;n m&aacute;s com&uacute;n de esta entidad patol&oacute;gica es el asma bronquial, y se presenta en casi la totalidad de los pacientes afectados. Como manifestaciones menos frecuentes encontramos neumonitis eosinof&iacute;lica<sup>11</sup> y hemorragia alveolar<sup>12</sup>. Debido a que la eosinofilia genera un estado pro-tromb&oacute;tico, tambi&eacute;n se ve asociada a tromboembolismos pulmonares<sup>13</sup>.</p>      <p><b><i>Otorrinolaringol&oacute;gicas</i></b></p>      ]]></body>
<body><![CDATA[<p>La presentaci&oacute;n m&aacute;s frecuente en esta regi&oacute;n es la sinusitis cr&oacute;nica asociada a una rinitis al&eacute;rgica y, en ciertos casos, p&oacute;lipos nasales<sup>14</sup>. Otras manifestaciones menos frecuentes son: sordera neurosensorial, otitis media supurativa, rotura timp&aacute;nica<sup>15</sup>, par&aacute;lisis facial y v&eacute;rtigo<sup>16</sup>.</p>      <p><b><i>Cardiacas</i></b></p>      <p>La afectaci&oacute;n cardiaca se puede manifestar de m&uacute;ltiples formas, entre ellas encontramos la miocardiopat&iacute;a restrictiva o dilatada, arritmias, valvulopat&iacute;a, muerte s&uacute;bita<sup>17</sup>, efusi&oacute;n peric&aacute;rdica<sup>18</sup>, arteritis coronaria<sup>19</sup> y rara vez los aneurismas coronarios<sup>20</sup>.</p>      <p><b><i>Musculocut&aacute;neas y articulares</i></b></p>      <p>La p&uacute;rpura palpable es la lesi&oacute;n cut&aacute;nea m&aacute;s frecuentemente vista en la poliange&iacute;tis granulomatosa con eosinofilia<sup>21</sup>. Otras manifestaciones cut&aacute;neas son placas eritematosas con o sin ulceraci&oacute;n<sup>22</sup>, petequias<sup>23</sup>, prurito, n&oacute;dulos subcut&aacute;neos y dermatitis<sup>24</sup>. El compromiso cut&aacute;neo se observa en 2 tercios de los pacientes<sup>25</sup> y la superficie extensora del codo es el sitio m&aacute;s afectado<sup>26</sup>. Existen reportes de miositis circunscrita<sup>27 </sup>y difusa<sup>28</sup> relacionada con esta enfermedad. Existe tambi&eacute;n sinovitis de peque&ntilde;as y medianas articulaciones<sup>29</sup>. Como una manifestaci&oacute;n infrecuente encontramos la necrosis de los d&iacute;gitos<sup>30</sup>. Parece existir una correlaci&oacute;n infrecuente entre la poliange&iacute;tis granulomatosa con eosinofilia y la artritis reumatoidea<sup>31</sup>.</p>      <p><b><i>Neurol&oacute;gicas y oftalmol&oacute;gicas</i></b></p>      <p>La afectaci&oacute;n m&aacute;s com&uacute;n es una mononeuritis m&uacute;ltiple, que con mayor frecuencia y severidad afecta los nervios fibulares<sup>32</sup>. Esta condici&oacute;n puede progresar a una polineuropat&iacute;a<sup>32</sup>. La afectaci&oacute;n es, principalmente, de orden motor, aunque tambi&eacute;n presenta alteraciones sensitivas en un menor porcentaje y se manifiesta en una proporci&oacute;n similar en miembros superiores e inferiores<sup>33</sup>. Las manifestaciones neurol&oacute;gicas tienden a ser similares, tanto en distribuci&oacute;n y progreso, a las de la poliarteritis nodosa y la artritis reumatoi-dea. Las manifestaciones neurol&oacute;gicas tienden a presentarse de forma m&aacute;s tard&iacute;a que las respiratorias<sup>32</sup>. Existen tambi&eacute;n manifestaciones menos frecuentes, tales como accidentes cerebrovasculares<sup>34,35</sup>, isquemia del nervio &oacute;ptico, amaurosis fugax, par&aacute;lisis del m&uacute;sculo oblicuo superior<sup>36</sup>, par&aacute;lisis del nervio motor ocular com&uacute;n<sup>37</sup> y afectaci&oacute;n conjuntival<sup>29</sup>.</p>      <p><b><i>Renales</i></b></p>      <p>Aproximadamente el 25% de los pacientes con poliange&iacute;tis granulomatosa con eosinofilia presentan enfermedad renal<sup>38</sup>. La histolog&iacute;a m&aacute;s frecuente de la afectaci&oacute;n renal es la glo-merulonefritis necrosante con semilunas, aunque existe una gran variedad de cuadros inflamatorios glomerulares<sup>38</sup>. La manifestaci&oacute;n cl&iacute;nica m&aacute;s frecuente es una insuficiencia renal aguda que evoluciona r&aacute;pidamente. La proteinuria microsc&oacute;pica y la hematuria est&aacute;n presentes en todos los pacientes con afectaci&oacute;n renal<sup>39</sup>.</p>      <p><b><i>Gastrointestinales</i></b></p>      ]]></body>
<body><![CDATA[<p>Entre el 31 y el 45% de los pacientes presentan manifestaciones gastrointestinales<sup>40</sup>. El dolor abdominal es el s&iacute;ntoma m&aacute;s frecuente<sup>6</sup>, y tambi&eacute;n se observan diarrea, sangrado digestivo, p&eacute;rdida de peso, pancreatitis, dehiscencia de tejidos reparados<sup>40</sup>, isquemia intestinal y perforaci&oacute;n de v&iacute;scera hueca<sup>41</sup>. El abdomen agudo se manifiesta de forma infrecuente y est&aacute; asociado a mal pron&oacute;stico<sup>42</sup>.</p>      <p><font size="3"><b>Estudios de laboratorio y gabinete</b></font></p>      <p>Como parte de los criterios diagn&oacute;sticos del ACR encontramos la presencia de una eosinofilia mayor al 10%, por lo cual se considera como un marcador inespec&iacute;fico de la enfermedad<sup>43</sup>. La concentraci&oacute;n de la eotaxina-3 est&aacute; asociada a la fase activa de la enfermedad y se correlaciona con la elevaci&oacute;n de los niveles de los reactantes de fase aguda, IgE y n&uacute;mero de eosin&oacute;filos en sangre perif&eacute;rica<sup>44</sup></p>      <p>El entre el 40<sup>45</sup> y el 74,3% de los pacientes diagnosticados con esta enfermedad son positivos para el anticuerpo antineutr&oacute;filo citoplasm&aacute;tico perinuclear (ANCA), y en un menor porcentaje, c-ANCA positivos<sup>45</sup>. Se encontr&oacute; una fuerte prevalencia de ANCA-anti-mieloperoxidasa (MPO) versus el ANCA-proteinasa 3 (PR3)<sup>46</sup>, aunque esta tendencia var&iacute;a en el caso de las poblaciones del Reino Unido y del norte de Europa<sup>47</sup>. Los pacientes con positividad para el ANCA muestran manifestaciones cl&iacute;nicas diferentes de aquellos que carecen de este marcador<sup>45</sup>. Los pacientes ANCA negativos tienden a tener menos compromiso renal<sup>24</sup> y mayor incidencia de enfermedad cardiaca<sup>14</sup>.</p>      <p>Las biopsias tisulares son de importancia diagn&oacute;stica; en el caso de las biopsias cut&aacute;neas, se recomienda que se realicen en un periodo menor a 48 h en caso de lesiones purp&uacute;ricas y en 72 h en las lesiones nodulares<sup>21</sup>. El patr&oacute;n histol&oacute;gico m&aacute;s frecuente en biopsias son los granulomas necrosantes extravasculares<sup>48</sup>.</p>      <p>Los hallazgos radiol&oacute;gicos m&aacute;s comunes son las consolidaciones transitorias no segmentales<sup>49</sup>. La lesi&oacute;n m&aacute;s frecuente observada por medio de tomograf&iacute;a de alta resoluci&oacute;n es la presencia de opacidades de vidrio esmerilado u opacidades difusas bilaterales<sup>50</sup>. Estas manifestaciones est&aacute;n presentes en el 90% de los casos; en el 50% de los casos se observa la presencia de l&iacute;neas septales. En el 88% de los pacientes se visualizan anormalidades pulmonares por medio de tomograf&iacute;a<sup>51</sup>.</p>      <p>En la evaluaci&oacute;n de las manifestaciones cardiacas los hallazgos electrocardiogr&aacute;ficos m&aacute;s frecuentes son alteraciones inespec&iacute;ficas del segmento ST y cambios en la onda T. La ecocardiograf&iacute;a puede mostrar disfunci&oacute;n del ventr&iacute;culo izquierdo y un derrame peric&aacute;rdico de peque&ntilde;o o mediano tama&ntilde;o<sup>25</sup>.</p>      <p><font size="3"><b>Tratamiento</b></font></p>      <p>El tratamiento tradicional para la generar remisi&oacute;n en pacientes con esta enfermedad es el uso de glucocorticoides o ciclofosfamida<sup>52,53</sup>.</p>      <p>El tratamiento habitual es la prednisolona oral a una dosis 1 mg/kg/d&iacute;a por un mes, seguido por disminuciones de 2,5 mg por semana hasta llegar a los 10mg/d&iacute;a. A partir de ese momento se disminuye 1 mg por semana hasta suspender el f&aacute;rmaco<sup>54</sup>.</p>      ]]></body>
<body><![CDATA[<p>La ciclofosfamida tambi&eacute;n es utilizada para la inducci&oacute;n de la remisi&oacute;n<sup>53,54</sup>; el f&aacute;rmaco se puede dar de forma oral a 2 mg/kg/d&iacute;a por 12 meses o darse en pulsos mensuales de 0,6 g/m<sup>2</sup>.</p>      <p>La ciclofosfamida parece especialmente &uacute;til en la disminuci&oacute;n del da&ntilde;o mioc&aacute;rdico y en la disfunci&oacute;n contr&aacute;ctil<sup>55</sup>.</p>      <p>Se ha visto que la utilizaci&oacute;n de metilprednisolona en pulso, agregado a prednisolona oral a una dosis de 1 mg/kg/d&iacute;a, por 3 semanas, es efectiva para inducir la remisi&oacute;n<sup>56</sup>.</p>      <p>El uso de rituximab como monoterapia o en conjunto con prednisolona en pacientes, por 4 semanas, es igual de efectivo para el tratamiento de vasculitis severa que el r&eacute;gimen de ciclofosfamida-azatioprina, con un n&uacute;mero de efectos adversos similar<sup>57</sup>.</p>      <p>En un estudio comparativo se encontr&oacute; que el rituximab y la azatioprina son f&aacute;rmacos de mantenimiento muy efectivos en el tratamiento de las vasculitis asociadas al ANCA<sup>58</sup>, aunque la toxicidad del rituximab a largo plazo a&uacute;n no est&aacute; del todo clara.</p>      <p>El uso concomitante de inmunoglobulinas con corticosteroides como inductor de remisi&oacute;n ha probado ser efectivo<sup>59</sup>. Esta terapia tambi&eacute;n es de utilidad en el tratamiento de la neuropat&iacute;a perif&eacute;rica residual<sup>60</sup>. Tambi&eacute;n se ha notado que el uso de interfer&oacute;n-a<sup>23</sup>, eternacept y remicade<sup>61</sup> es de utilidad en casos refractarios en combinaci&oacute;n con el tratamiento tradicional.</p>      <p>La eficacia del tratamiento se mide acorde con la capacidad de inducir una remisi&oacute;n y de mantener al paciente libre de vasculitis. Un paciente se considera en remisi&oacute;n una vez que ha pasado 6 meses sin sintomatologia<sup>11</sup>, y se considera libre de enfermedad despu&eacute;s de pasar 18 meses sin s&iacute;ntomas una vez concluido el tratamiento<sup>54</sup>.</p>      <p>El <i>Birgminham Vasculitis Activity Score </i>se utiliza para determinar la presencia o ausencia de enfermedad activa en las vasculitis sist&eacute;micas<sup>62</sup>. Actualmente se utiliza la tercera versi&oacute;n<sup>63</sup>.</p>       <p><font size="3"><b>Pron&oacute;stico</b></font></p>      <p>Sin recibir tratamiento, hasta el 50% de los pacientes mueren en un periodo de 3 meses desde el inicio de la vasculitis<sup>64</sup>.</p>      ]]></body>
<body><![CDATA[<p>La principal causa de muerte en los pacientes con esta enfermedad es el compromiso cardiaco asociado<sup>65</sup>.</p>      <p>El <i>Five Factor Score </i>(puntaje de 5 factores) es un sistema de puntuaci&oacute;n que se utiliza para determinar la probabilidad de muerte en un periodo de 5 a&ntilde;os en pacientes portadores de una vasculitis necrosante sist&eacute;mica. Originalmente fue creado en 1996<sup>66</sup> (<a href="#tab2">tabla 2</a>). En el a&ntilde;o 2009 (<a href="#tab3">tabla 3</a>) se revisa y se modifican 2 de los 5 factores previos para su utilizaci&oacute;n en pacientes con diagn&oacute;stico reciente. En pacientes con un puntaje de 0, la supervivencia en 5 a&ntilde;os es del 91%, de 1 punto es del 79% y de m&aacute;s de 2 puntos es del 60%<sup>67</sup>.</p>      <p align="center"><a name="tab2"><img src="img/revistas/rcre/v22n3/v22n3a07t2.jpg"></a></p>     <p align="center"><a name="tab3"><img src="img/revistas/rcre/v22n3/v22n3a07t3.jpg"></a></p>       <p><font size="3"><b>Responsabilidades &eacute;ticas</b></font></p>      <p><b>Protecci&oacute;n de personas y animales</b>. Los autores declaran que los procedimientos seguidos se conformaron a las normas &eacute;ticas del comit&eacute; de experimentaci&oacute;n humana responsable y de acuerdo con la Asociaci&oacute;n M&eacute;dica Mundial y la Declaraci&oacute;n de Helsinki.</p>      <p><b>Confidencialidad de los datos</b>. Los autores declaran que en este art&iacute;culo no aparecen datos de pacientes.</p>      <p><b>Derecho a la privacidad y consentimiento informado</b>. Los autores declaran que en este art&iacute;culo no aparecen datos de pacientes.</p>      <p><font size="3"><b>Conflicto de intereses</b></font></p>      <p>Los autores declaran no tener ning&uacute;n conflicto de intereses.</p>  <hr>      ]]></body>
<body><![CDATA[<p><font size="3"><b>Bibliograf&iacute;a</b></font></p>       <!-- ref --><p>1. Churg J, Strauss l. Allergic granulomatosis, allergic angiitis and periarteritis nodosa. Am J Pathol. 1951;27:277-301.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=2832296&pid=S0121-8123201500030000700001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>      <!-- ref --><p>2. Eustace JA, Nadasdy T, Choi M. The Churg-Strauss syndrome. J Am Soc Nephrol. 1999;10:2048-55.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=2832298&pid=S0121-8123201500030000700002&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>      <!-- ref --><p>3. 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