<?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>S0121-81232007000300006</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Síndrome de Sjögren primario con neumonía intersticial linfocítica y enfermedad quística pulmonar]]></article-title>
<article-title xml:lang="en"><![CDATA[Primary Sjögren's syndrome with lymphocitic interstitial pneumonia and cystic pulmonary disease]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mejía-Vallejo]]></surname>
<given-names><![CDATA[Jimi]]></given-names>
</name>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Carrillo-Bayona]]></surname>
<given-names><![CDATA[Jorge]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Iglesias-Gamarra]]></surname>
<given-names><![CDATA[Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rondón]]></surname>
<given-names><![CDATA[Federico]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sánchez Contreras]]></surname>
<given-names><![CDATA[Álvaro]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Restrepo]]></surname>
<given-names><![CDATA[José Félix]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidad Nacional de Colombia Radiología ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="A02">
<institution><![CDATA[,Universidad Nacional de Colombia Medicina Interna y Reumatología ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2007</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2007</year>
</pub-date>
<volume>14</volume>
<numero>3</numero>
<fpage>232</fpage>
<lpage>236</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0121-81232007000300006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0121-81232007000300006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0121-81232007000300006&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[El síndrome de Sjögren primario (SSP) es una exocrinopatía autoinmune crónica caracterizada por infiltración linfocítica de tejido glandular y extraglandular; el compromiso pulmonar es heterogéneo; el objetivo del presente estudio es informar el primer caso en Colombia de SSP con neumonía intersticial linfocítica y enfermedad quística pulmonar, plantear diagnósticos diferenciales, abordaje diagnóstico y alternativas terapéuticas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[The primary Sjögren's syndrome (PSS) is a chronic autoimmune exocrinopathy characterized by lymphocytic infiltration of glandular and extraglandular tissue, the lung involvement is heterogeneous; the aim of this study is report the first case in Colombia of PSS with lymphocytic intersticial pneumonia and cystic pulmonary disease discuss differential diagnosis and the initial diagnostic and therapeutic work up.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[síndrome de Sjögren primario]]></kwd>
<kwd lng="es"><![CDATA[enfermedad pulmonar quística]]></kwd>
<kwd lng="es"><![CDATA[neumonía intersticial linfocítica]]></kwd>
<kwd lng="en"><![CDATA[primary Sjögren's syndrome]]></kwd>
<kwd lng="en"><![CDATA[cystic lung disease]]></kwd>
<kwd lng="en"><![CDATA[lymphocytic interstitial pneumonia]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[   <font face="verdana" size="2">      <p align="right">Presentaci&oacute;n de caso y Revisi&oacute;n de la literatura </p>     <p>&nbsp;</p>     <p align="center"><font size="4"><B>S&iacute;ndrome de Sj&ouml;gren primario con neumon&iacute;a intersticial linfoc&iacute;tica y enfermedad qu&iacute;stica pulmonar</B></font></p>     <p>&nbsp;</p>     <P align="center"><font size="3"><b>Primary Sj&ouml;gren&#039;s syndrome with lymphocitic interstitial pneumonia  and cystic pulmonary disease </b></font></p>     <p>&nbsp;</p>     <p><b>Jimi Mej&iacute;a-Vallejo<SUP>1</SUP>, Jorge Carrillo-Bayona<SUP>2</SUP>, Antonio Iglesias-Gamarra<SUP>3</SUP>,  Federico Rond&oacute;n<SUP>4</SUP>, &Aacute;lvaro S&aacute;nchez Contreras<SUP>4</SUP>, Jos&eacute; F&eacute;lix Restrepo<SUP>5</SUP></b></p>      <p>1.      Residente I de Reumatolog&iacute;a    <br> 2.      Profesor Asociado de Radiolog&iacute;a Universidad Nacional de Colombia    ]]></body>
<body><![CDATA[<br> 3.      Profesor Titular de Medicina Interna y Reumatolog&iacute;a. Universidad    Nacional de Colombia     <br>4.      Profesor Asociado de Medicina Interna y Reumatolog&iacute;a.    Universidad Nacional de Colombia     <br>5.      Profesor Titular de Medicina Interna y Reumatolog&iacute;a. Universidad  Nacional de Colombia. Coordinador Unidad de Reumatolog&iacute;a.</p>     <p>Recibido para publicaci&oacute;n: julio 27/2007  Aceptado en forma revisada: agosto 31/2007</p>     <p>&nbsp;</p>  <hr size="1">     <p><B>Resumen</B></p>     <p>El s&iacute;ndrome de Sj&ouml;gren primario (SSP) es    una exocrinopat&iacute;a autoinmune cr&oacute;nica caracterizada    por infiltraci&oacute;n linfoc&iacute;tica de tejido glandular y    extraglandular; el compromiso pulmonar es    heterog&eacute;neo; el objetivo del presente estudio es informar    el primer caso en Colombia de SSP con    neumon&iacute;a intersticial linfoc&iacute;tica y enfermedad    qu&iacute;stica pulmonar, plantear diagn&oacute;sticos diferenciales,    abordaje diagn&oacute;stico y alternativas terap&eacute;uticas.</p>     <p><b>Palabras clave: </b>s&iacute;ndrome de Sj&ouml;gren    primario, enfermedad pulmonar qu&iacute;stica, neumon&iacute;a  intersticial linfoc&iacute;tica. <hr size="1">     <p><B>Summary</B></p>     <p>The primary Sj&ouml;gren&#039;s syndrome (PSS) is a chronic autoimmune exocrinopathy    characterized by lymphocytic infiltration of glandular    and extraglandular tissue, the lung involvement is heterogeneous; the aim of this study is report    the first case in Colombia of PSS with lymphocytic intersticial pneumonia and cystic    pulmonary disease discuss differential diagnosis and the  initial diagnostic and therapeutic work up. </p>     ]]></body>
<body><![CDATA[<p><b>Key words: </b>primary Sj&ouml;gren&#039;s syndrome,  cystic lung disease, lymphocytic interstitial pneumonia<b>. </b> <hr size="1">      <P align="center">&nbsp;</p>     <P align="center"><b><font size="3">Introducci&oacute;n</font></b></p>     <p>El s&iacute;ndrome de Sj&ouml;gren es una  exocrinopat&iacute;a autoinmune cr&oacute;nica caracterizado por  infiltraci&oacute;n linfoc&iacute;tica glandular y extraglandular asociado a  producci&oacute;n de autoanticuerpos<SUP>1</SUP>. Sus criterios  diagn&oacute;sticos incluyen queratoconjuntivitis sicca y  xerostomia m&aacute;s la presencia de un criterio  autoinmune<SUP>2</SUP>. Diferentes manifestaciones  pulmonares han sido descritas en el s&iacute;ndrome de Sj&ouml;gren las cuales incluyen  compromiso de la v&iacute;a a&eacute;rea superior, compromiso de la v&iacute;a  a&eacute;rea inferior, enfermedad pulmonar intersticial,  quistes pulmonares, infiltrado nodular focal o difuso  (linfoma<SUP>3</SUP>, pseudolinfoma, amiloidosis, hiperfuncionalidad de  tejido linfoide asociado a bronquios)<SUP>4</SUP>. Aqu&iacute;  se describe el primer caso en Colombia de s&iacute;ndrome de Sj&ouml;gren  primario con m&uacute;ltiples quistes pulmonares asociado a  un patr&oacute;n imagenol&oacute;gico de neumon&iacute;a  intersticial linfoc&iacute;tica.</p></p>     <p><B>C<font size="3">a</font>so </B></p>     <p>Paciente de 66 a&ntilde;os de edad, sexo femenino,  valorada en abril de 2007 por xeroftalmia,  xerostom&iacute;a, xeromicteria, xerodermia, fatiga, tos seca y disnea  clase funcional II de dos a&ntilde;os de evoluci&oacute;n; con  fen&oacute;meno de Raynaud, artralgia en mu&ntilde;eca izquierda, prurito  de predominio nocturno, p&eacute;rdida de peso de 12 kg en  dos a&ntilde;os; sin antecedentes ginecoobst&eacute;tricos relevantes  y con exposici&oacute;n a humo de combusti&oacute;n vegetal por  10 a&ntilde;os; presi&oacute;n arterial de 100/60 mm Hg, frecuencia  card&iacute;aca 100 por minuto, frecuencia respiratoria 18  respiraciones minuto, peso de 43 kg, inyecci&oacute;n  conjuntival leve bilateral, exploraci&oacute;n cardiopulmonar  normal, hipocratismo digital leve. El laboratorio  muestra leucocitos 3700 x mm3 (neutr&oacute;filos 43%, linfocitos  30%, monocitos 26%, bas&oacute;filos 0,3%, eosin&oacute;filos 0,3%),  hemoglobina 17,5 g/dl, hematocrito 54%, VCM 98  /fl, plaquetas 148000 uL, VSG 1 mm/h, ANAS  positivos (patr&oacute;n homog&eacute;neo 1/640), anticuerpos anti-La  positivo 23 (positividad &iacute;ndice mayor de 15); anticuerpos  anti-Ro negativos, factor reumatoide negativo; radiograf&iacute;a  del t&oacute;rax con infiltrados intersticiales  reticulonodulares bibasales e imagen radiol&uacute;cida parahiliar derecha  (<a href="#fig1">Figura 1</a>) y TAC de t&oacute;rax de alta resoluci&oacute;n con  im&aacute;genes qu&iacute;sticas m&uacute;ltiples en ambos campos pulmonares, la  de mayor tama&ntilde;o paramediast&iacute;nica derecha con  di&aacute;metro mayor de 4,5 cm, con presencia de patr&oacute;n  imaginol&oacute;gico de neumon&iacute;a intersticial linfoc&iacute;tica (<a href="#fig2">Figura 2</a>), biopsia  de gl&aacute;ndula salival menor conclusiva de  sialoadenitis autoinmune. Teniendo como base las caracter&iacute;sticas  cl&iacute;nicas, inmunol&oacute;gicas e histol&oacute;gicas se establece el  diagn&oacute;stico de s&iacute;ndrome de Sj&ouml;gren primario con  compromiso monoarticular y pulmonar. Se solicit&oacute;  fibrobroncoscopia con lavado broncoalveolar que mostr&oacute; negatividad  para malignidad, investigaci&oacute;n de BK negativos; se inici&oacute;  tratamiento con prednisolona 0,5 mg/kg/d&iacute;a, cloroquina  250 mg d&iacute;a, l&aacute;grimas artificiales; la secci&oacute;n de cirug&iacute;a  de t&oacute;rax determin&oacute; no realizar biopsia pulmonar debido a  la alta correlaci&oacute;n entre los hallazgos imaginol&oacute;gicos y  patol&oacute;gicos; persisti&oacute; disnea y marcada xeroftalm&iacute;a en  controles posteriores, ante lo cual se decidi&oacute; iniciar rituximab.</p>     <p align="center"><img src="img/revistas/rcre/v14n3/v14n3a06fig1.gif"><a name="fig1"></a></p>     <p align="center"><img src="img/revistas/rcre/v14n3/v14n3a06fig2.gif"><a name="fig2"></a></p>     <p>&nbsp;</p>     <p><B><font size="3">Discusi&oacute;n</font></B></p>     ]]></body>
<body><![CDATA[<p>El s&iacute;ndrome de Sj&ouml;gren ha sido caracterizado  como una epitelitis autoinmune y, de otra forma, como  una exocrinopat&iacute;a autoinmune ante la presencia de  adenitis focal, presencia de anticuerpos autoreactivos, y su  compleja inmunopatog&eacute;nesis que incluye linfoproliferaci&oacute;n  e infiltraci&oacute;n de linfocitos T y B en tejido glandular  y extraglandular (pulmones, p&aacute;ncreas, tracto  gastrointestinal, sistema hepatobiliar, ri&ntilde;ones, piel y  m&eacute;dula &oacute;sea)<SUP>5-6</SUP>. La historia natural del compromiso  respiratorio incluye disnea, taquipnea, tos como manifestaci&oacute;n  de xerotr&aacute;quea y aclaraci&oacute;n ciliar defectuosa, disfon&iacute;a,  sinusitis, dolor tor&aacute;xico, hiperreactividad bronquial,  neumon&iacute;as recurrentes, sintomatolog&iacute;a que usualmente  se establece de forma temprana en el curso de la  enfermedad predominantemente en pacientes con  anticuerpos anti Ro<SUP>7, 8</SUP>.</p>     <p>Diversas manifestaciones pulmonares han sido  descritas en pacientes con s&iacute;ndrome de Sj&ouml;gren,  formas severas progresivas de compromiso pulmonar intersticial, con una gran variedad de  patrones histol&oacute;gicos entre los que se encuentran:  neumon&iacute;a intersticial no espec&iacute;fica, neumon&iacute;a  organizada criptog&eacute;nica, neumon&iacute;a intersticial usual,  neumon&iacute;a intersticial linfoc&iacute;tica, linfoma pulmonar  primario, amiloidosis intersticial  difusa<SUP>9-11</SUP>; el compromiso de la v&iacute;a a&eacute;rea incluye disecci&oacute;n traqueobronquial,  enfermedad pulmonar obstructiva, bronquitis y  bronquiolitis folicular linfoc&iacute;tica, quistes  pulmonares; el compromiso pleural tambi&eacute;n ha sido documentado (<a href="#tab1">Tabla  1</a>)<SUP>12</SUP>. En este informe se presenta un caso de s&iacute;ndrome  de Sj&ouml;gren primario con anticuerpos anti-La con  m&uacute;ltiples quistes pulmonares y un patr&oacute;n radiol&oacute;gico de  neumon&iacute;a intersticial linfoc&iacute;tica.</p>     <p align="center"><img src="img/revistas/rcre/v14n3/v14n3a06tab1.gif"><a name="tab1"></a></p>     <p>La neumon&iacute;a intersticial linfoc&iacute;tica est&aacute; presente  en el 0,9% a 42% de pacientes con  SSP<SUP>13</SUP>, es un desorden linfoproliferativo benigno caracterizado por  proliferaci&oacute;n intersticial difusa de linfocitos y c&eacute;lulas  plasm&aacute;ticas, ocurre en pacientes con s&iacute;ndrome de Sj&ouml;gren  primario, tiroiditis autoinmune, s&iacute;ndrome de  inmunodeficiencia adquirida y enfermedad de Castleman; su historia  natural es altamente variable, su comportamiento es  progresivo en una tercera parte de los pacientes; su  asociaci&oacute;n con linfoma a&uacute;n no est&aacute;  definida<SUP>14</SUP>.</p>     <p> Entre la gran variedad de manifestaciones pulmonares que presenta este s&iacute;ndrome la  enfermedad qu&iacute;stica pulmonar es infrecuente (11 casos  publicados oficialmente en la literatura mundial); en Colombia  se inform&oacute; un caso de s&iacute;ndrome de Sj&ouml;gren primario  con m&uacute;ltiples quistes pulmonares sin compromiso  intersticial<SUP>6, 15</SUP>.</p>     <p>Todos los pacientes informados han sido mujeres  (incluyendo el actual), con hallazgos histopatol&oacute;gicos  similares en donde prevalece infiltrado linfoc&iacute;tico  y linfoplasmoc&iacute;tico peribronquial y peribronquiolar;  la amiloidosis pulmonar estuvo en el 40% de los pacientes  y se ha documentado un paciente con neumon&iacute;a  intersticial linfoc&iacute;tica; la formaci&oacute;n de quistes en el s&iacute;ndrome  de Sj&ouml;gren parece ser generada por atrapamiento a&eacute;reo  secundario al extenso infiltrado inflamatorio  linfoplasmoc&iacute;tico de la pared bronquiolar que ejerce un efecto de  v&aacute;lvula impidiendo una adecuada espiraci&oacute;n, apoyado lo  anterior por el marcado infiltrado de linfocitos CD4 en la  mucosa bronquial; existe hiperfuncionalidad del tejido linfoide  asociado a los bronquios; histol&oacute;gicamente estos quistes  consisten en tejido pulmonar comprimido o una  membrana fibrosa delgada tapizada por epitelio columnar o  c&eacute;lulas epiteliales cuboidales y material hialino similar al  amiloide<SUP>6, 16</SUP>. </p>     <p>Ante la evidencia clara de un s&iacute;ndrome de  Sj&ouml;gren primario las alternativas diagn&oacute;sticas de  quistes pulmonares s&iacute;ndrome incluyen el granuloma  eosinof&iacute;lico (un subtipo de la histiocitosis de c&eacute;lulas de  Langerhans), el cual puede causar bullas como resultado de  cavitaci&oacute;n de lesiones nodulares o atrapamiento a&eacute;reo distal  a bronquiolos que han sido reducidos en su luz por  infiltraci&oacute;n celular de su pared, tienden a ser numerosos y  a presentarse en historia previa de  tabaquismo<SUP>12</SUP>; diferentes tipos de enfisema pulmonar,  linfangioleiomiomatosis, bronquiectasias y bronquiolitis  obliterante<SUP>6</SUP>; la presencia de quistes pulmonares y n&oacute;dulos debe hacer  sospechar linfoma no Hodgkin de c&eacute;lulas B presente en el  5-10% de los pacientes con SSP teniendo en consideraci&oacute;n  la naturaleza policlonal de esta patolog&iacute;a asociada  a hipergamaglobulinemia; la neumon&iacute;a  intersticial linfoc&iacute;tica puede generar quistes pulmonares o  presentarse como un patr&oacute;n en vidrio esmerilado en la TAC  de pulm&oacute;n<SUP>9,12,17</SUP>; la gangrena pulmonar con necrosis  masiva tambi&eacute;n ha sido informada como causa de  cavitaci&oacute;n pulmonar en SSP<SUP>18</SUP>. Entre las lesiones qu&iacute;sticas no  relacionadas con el s&iacute;ndrome de Sj&ouml;gren se encuentran  las f&uacute;ngicas (coccidioides, aspergillus,  pneumocystys), bacterianas (staphylococcus, mycobacterium),  parasitarias (paragonimus, echinococcus) que deben ser  consideradas teniendo presente el compromiso  inmunol&oacute;gico en estos  pacientes<SUP>12</SUP>.</p>     <p>Las pruebas de funci&oacute;n pulmonar muestran una  combinaci&oacute;n de patr&oacute;n restrictivo y obstructivo, con  predominio de este &uacute;ltimo; hay pocos cambios en la difusi&oacute;n  de mon&oacute;xido de carbono; la fibrobroncoscopia con  lavado broncoalveolar es una herramienta diagn&oacute;stica &uacute;til en  la diferenciaci&oacute;n de alveolitis neutrof&iacute;lica caracter&iacute;stica  de fibrosis pulmonar y alveolitis por c&eacute;lulas T t&iacute;pica del  s&iacute;ndrome de Sj&ouml;gren; sin embargo, estos tres &uacute;ltimos  junto con la radiograf&iacute;a del t&oacute;rax son ex&aacute;menes orientativos  de poco rendimiento diagn&oacute;stico; la TAC pulmonar de  alta resoluci&oacute;n genera una orientaci&oacute;n diagn&oacute;stica  profunda en la cual se puede inferir el compromiso temprano de  las v&iacute;as a&eacute;reas, pleura e intersticio pulmonar, orientaci&oacute;n  que ser&aacute; confirmada de forma definitiva por biopsia  pulmonar; sin embargo, existe buena correlaci&oacute;n  histo-radiol&oacute;gica <SUP>12, 19-20</SUP>.</p>     <p>El tratamiento est&aacute; basado en la administraci&oacute;n  de broncodilatadores, corticoides con disminuci&oacute;n en el  volumen de los quistes en controles tomogr&aacute;ficos  ulteriores, sin embargo su eficacia no ha sido absoluta; ante  la infrecuencia de enfermedad qu&iacute;stica pulmonar en SSP  y teniendo en consideraci&oacute;n la presencia de linfocitos B  en un 20% del total del infiltrado linfoplasmoc&iacute;tico, y el  incremento en su actividad, la alternativa basada en la  hip&oacute;tesis de depleci&oacute;n de linfocitos B con  f&aacute;rmacos biol&oacute;gicos como rituximab podr&iacute;a ser una alternativa  de tratamiento &uacute;til en el af&aacute;n de evitar complicaciones  potencialmente letales ante la refractariedad a  tratamientos convencionales como lo hicimos en este  caso<SUP>6, 21</SUP>.</p>     <p>&nbsp;</p>     ]]></body>
<body><![CDATA[<p><B><font size="3">Conclusi&oacute;n</font></B></p>     <p>Se describe el primer caso cl&iacute;nico en Colombia  de SSP con compromiso respiratorio representado por  enfermedad pulmonar qu&iacute;stica m&uacute;ltiple, asociado a  patr&oacute;n de neumon&iacute;a intersticial linfoc&iacute;tica; esta patolog&iacute;a  rara por su coexistencia plantea un dilema diagn&oacute;stico en  el cual se debe descartar otra enfermedad  reumatol&oacute;gica asociada que incremente el espectro diagn&oacute;stico y  considerar al paciente con SSP como un individuo con  compromiso inmunol&oacute;gico y susceptible a  adquirir infecciones oportunistas que se manifiesten con  quistes pulmonares; esta patolog&iacute;a posee una aproximaci&oacute;n  terap&eacute;utica a&uacute;n no completamente establecida, en  donde el tratamiento convencional con esteroides no es  totalmente exitoso, y s&oacute;lo existe la perspectiva de utilidad  de depleci&oacute;n de linfocitos B CD20.</p>     <p>&nbsp;</p>     <p><B><font size="3">Referencias</font></B></p>     <!-- ref --><p>1.      Larch&eacute; M. A short review of the pathogenesis of  Sj&ouml;gren&#039;s syndrome. Autoimmunity Rev 2006; 5: 132-135. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000047&pid=S0121-8123200700030000600001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p>2.      Vitali C, Bombardieri S, Jonsson R, Moutsopoulos  HM, Alexander EL, Carsons SE, et al. Classification criteria  for Sj&ouml;gren&#039;s syndrome: a revised version of the  European criteria proposed by the American-European  Consensus Group. 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