<?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>0120-9957</journal-id>
<journal-title><![CDATA[Revista colombiana de Gastroenterología]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Col Gastroenterol]]></abbrev-journal-title>
<issn>0120-9957</issn>
<publisher>
<publisher-name><![CDATA[Asociación Colombiana de Gastroenterología  ]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0120-99572007000200011</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Desórdenes eosinofílicos gastrointestinales (DEGI): presentación de dos casos]]></article-title>
<article-title xml:lang="en"><![CDATA[Gastrointestinal Eosinofilic Disorders]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez María]]></surname>
<given-names><![CDATA[Roberto]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bohórquez]]></surname>
<given-names><![CDATA[María Amalia]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González]]></surname>
<given-names><![CDATA[Irene]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Torregroza]]></surname>
<given-names><![CDATA[Gustavo]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidad Libre de Barranquilla Postgardo de Medicina Interna Gastroenterología]]></institution>
<addr-line><![CDATA[Barranquilla ]]></addr-line>
</aff>
<aff id="A02">
<institution><![CDATA[,Universidad Libre de Barranquilla Medicina Interna ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>30</day>
<month>06</month>
<year>2007</year>
</pub-date>
<pub-date pub-type="epub">
<day>30</day>
<month>06</month>
<year>2007</year>
</pub-date>
<volume>22</volume>
<numero>2</numero>
<fpage>138</fpage>
<lpage>148</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0120-99572007000200011&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0120-99572007000200011&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0120-99572007000200011&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Los desórdenes eosinofílicos gastrointestinales (DEGI) son enfermedades poco frecuentes, de etiopatogenia poco clara, que se caracterizan por la presencia de un infiltrado eosinófilo que puede afectar a las distintas capas de la pared del tubo digestivo en ausencia de causas conocidas de eosinofilia. Las manifestaciones clínicas son variables y los síntomas están condicionados por el grado de infiltración eosinófila de la pared, el número de capas afectadas y del segmento del tracto gastrointestinal implicado. Los síntomas de presentación varían desde diarrea, vómitos, dolor abdominal y pérdida de peso hasta la obstrucción intestinal aguda. Se caracterizan por presentar eosinofilia periférica, aunque no es un criterio obligado. Su diagnóstico definitivo es anatomopatológico. El uso de esteroides es considerado como la piedra angular del tratamiento. Presentamos dos casos, con diferentes formas de presentación clínica, con respuesta inicial a los esteroides y posterior recaída después de la suspensión de éstos, permaneciendo asintomáticos actualmente con dependencia de dosis bajas de esteroides. Seguidamente haremos la revisión de la literatura disponible subrayando los datos fisiopatológicos, evaluación clínica y aspectos terapéuticos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[The gastrointestinal eosinofilic disorders are little frequent diseases, of etiopatogenia little clear, that are characterized by the presence of an infiltrated eosinofilo that can affect the different layers of the wall of the alimentary canal in absence of known causes of eosinofilia. The clinical manifestations are variable and the symptoms are conditioned by the degree of eosinofila of the wall, the number of layers affected and the segment of the gastrointestinal tract implied. The presentations symptoms vary from diarrhea, vomits, abdominal pain and loss of weigh until the acute intestinal obstruction. They are characterized to present peripherical eosinofilia, although it is not a forced criterion. Its definite diagnosis is anatomopatologic. The steroid use is considered as the angular stone of the treatment. We present two cases, with different clinical presentation forms, with initial answer to steroids and later relapse after the suspension of these, remaining without symptoms actually with dependency of low doses of steroids. Next we will do the revision of the available literature emphasizing the physiopathological data, the clinical evaluation and the therapeutic aspects.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[DEGI]]></kwd>
<kwd lng="es"><![CDATA[GE (gastroenteritis eosinofílica)]]></kwd>
<kwd lng="es"><![CDATA[EE (esofagitis eosinofílica)]]></kwd>
<kwd lng="es"><![CDATA[tratamiento esteroideo]]></kwd>
<kwd lng="en"><![CDATA[GIED]]></kwd>
<kwd lng="en"><![CDATA[EG (Eosinofilic Gastroenteritis)]]></kwd>
<kwd lng="en"><![CDATA[EE (Eosinofilic Esofagitis)]]></kwd>
<kwd lng="en"><![CDATA[esteroid treatment]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <P ALIGN="CENTER"><font size="+1" face="verdana">Des&oacute;rdenes eosinof&iacute;licos gastrointestinales (DEGI): presentaci&oacute;n de dos casos</font></P>     <P ALIGN="CENTER"><font size="+1" face="verdana">Gastrointestinal Eosinofilic Disorders</font></P>     <P ALIGN="CENTER"><font size="2" face="verdana">Roberto Rodr&iacute;guez Mar&iacute;a,<SUP>1</SUP> Mar&iacute;a Amalia Boh&oacute;rquez,<SUP>2</SUP> Irene Gonz&aacute;lez,<SUP>2</SUP> Gustavo Torregroza<SUP>2</SUP>.</font></P>     <P><font size="2" face="verdana">1. Gastroenterolog&iacute;a, UGASEND. Docente de Gastroenterolog&iacute;a, Postgrado de Medicina Interna Universidad Libre de Barranquilla</font></P>     <P><font size="2" face="verdana">2. Residentes de segundo a&ntilde;o de Medicina Interna, Universidad Libre de Barranquilla.</font></P>     <P><font size="2" face="verdana">Fecha recibido: 21-03-07 / Fecha aceptado: 08-05-07</font></P>     <P><font size="2" face="verdana"><B>Resumen</B></font></P>     <P><font size="2" face="verdana">Los des&oacute;rdenes eosinof&iacute;licos gastrointestinales (DEGI) son enfermedades poco frecuentes, de etiopatogenia poco clara, que se caracterizan por la presencia de un infiltrado eosin&oacute;filo que puede afectar a las distintas capas de la pared del tubo digestivo en ausencia de causas conocidas de eosinofilia. Las manifestaciones cl&iacute;nicas son variables y los s&iacute;ntomas est&aacute;n condicionados por el grado de infiltraci&oacute;n </font><FONT FACE="Verdana" SIZE=2>eosin&oacute;fila de la pared, el n&uacute;mero de capas afectadas y del segmento del tracto gastrointestinal implicado. Los s&iacute;ntomas de presentaci&oacute;n var&iacute;an desde diarrea, v&oacute;mitos, dolor abdominal y p&eacute;rdida de peso hasta la obstrucci&oacute;n intestinal aguda. Se caracterizan por presentar eosinofilia perif&eacute;rica, aunque no es un criterio obligado. Su diagn&oacute;stico definitivo es anatomopatol&oacute;gico. El uso de esteroides es considerado como la piedra angular del tratamiento. Presentamos dos casos, con diferentes formas de presentaci&oacute;n cl&iacute;nica, con respuesta inicial a los esteroides y posterior reca&iacute;da despu&eacute;s de la suspensi&oacute;n de &eacute;stos, permaneciendo asintom&aacute;ticos actualmente con dependencia de dosis bajas de esteroides. Seguidamente haremos la revisi&oacute;n de la literatura disponible subrayando los datos fisiopatol&oacute;gicos, evaluaci&oacute;n cl&iacute;nica y aspectos terap&eacute;uticos.</font></P>     <P><font size="2" face="verdana"><B>Palabras clave</B>: DEGI, GE (gastroenteritis eosinof&iacute;lica), EE (esofagitis eosinof&iacute;lica), tratamiento esteroideo.</font></P>     <P><font size="2" face="verdana"><b>Summary</b></font></P>     ]]></body>
<body><![CDATA[<P><font size="2" face="verdana">The gastrointestinal eosinofilic disorders are little frequent diseases, of etiopatogenia little clear, that are characterized by the presence of an infiltrated eosinofilo that can affect the different layers of the wall of the alimentary canal in absence of known causes of eosinofilia. The clinical manifestations are variable and the symptoms are conditioned by the degree of eosinofila of the wall, the number of layers affected and the segment of the gastrointestinal tract implied. The presentations symptoms vary from diarrhea, vomits, abdominal pain and loss of weigh until the acute intestinal obstruction. They are characterized to present peripherical eosinofilia, although it is not a forced criterion. Its definite diagnosis is anatomopatologic. The steroid use is considered as the angular stone of the treatment. We present two cases, with different clinical presentation forms, with initial answer to steroids and later relapse after the suspension of these, remaining without symptoms actually with dependency of low doses of steroids. Next we will do the revision of the available literature emphasizing the physiopathological data, the clinical evaluation and the therapeutic aspects. </font></P>     <P><font size="2" face="verdana"><B>Key words</B>: GIED, EG (Eosinofilic Gastroenteritis), EE (Eosinofilic Esofagitis) and esteroid treatment. </font></P>     <P><font size="2" face="verdana"><b>Introducci&oacute;n</b></font></P>     <P><font size="2" face="verdana">Los des&oacute;rdenes eosinof&iacute;licos gastrointestinales (DEGI) son entidades muy poco frecuentes, descritas por primera vez por Kaijser en 1937 (1), cuya incidencia real es muy dif&iacute;cil de estimar. Se han publicado hasta el momento nueve series con 357 casos, de diferentes partes del mundo, incluyendo Norteam&eacute;rica, Europa, Australia y Asia, los cuales han aportado datos epidemiol&oacute;gicos, caracter&iacute;sticas cl&iacute;nicas y pautas para el diagn&oacute;stico y manejo de esta entidad (2-10) La edad de presentaci&oacute;n m&aacute;s habitual est&aacute; comprendida entre la tercera y la quinta d&eacute;cadas de la vida (7). </font></P>     <P><font size="2" face="verdana">Los DEGI han sido clasificados seg&uacute;n su etiolog&iacute;a en primarios y secundarios; seg&uacute;n su topograf&iacute;a, que establece el principal sitio de afectaci&oacute;n en esofagitis (EE), gastroenteritis (GE), enteritis y colitis eosinof&iacute;lica; y seg&uacute;n su patogenia en mediados por IgE y no mediados por IgE. </font></P>     <P><font size="2" face="verdana">Presentamos dos casos, con distintas formas de presentaci&oacute;n cl&iacute;nica que constituyen un hallazgo epidemiol&oacute;gico infrecuente en un pa&iacute;s latinoamericano donde poco se ha publicado al respecto.</font></P>     <P><font size="2" face="verdana"><b>Presentaci&oacute;n de casos</b></font></P>     <P><font size="2" face="verdana"><b>Caso 1</b></font></P>     <P><font size="2" face="verdana">Var&oacute;n de 28 a&ntilde;os de edad, sin antecedentes personales o familiares, quien consulta por cuadro cl&iacute;nico de una semana de evoluci&oacute;n caracterizado por dolor abdominal difuso, no irradiado, de gran intensidad acompa&ntilde;ado de n&aacute;useas, v&oacute;mitos intermitentes, deposiciones l&iacute;quidas # 3-4 sin moco, ni sangre ni pus, asociado a astenia, malestar general e hiporexia. Al examen f&iacute;sico se encontr&oacute; un paciente en regulares condiciones generales, &aacute;lgido con TA: 120/80, FC: 92 lpm, FR: 22 rpm, destac&aacute;ndose la presencia de vibraciones vocales abolidas en base pulmonar derecha, matidez a la percusi&oacute;n as&iacute; como ausencia de murmullo vesicular. A nivel abdominal, presencia de peristalsis adecuada, dolor difuso a la palpaci&oacute;n, sin signos de irritaci&oacute;n peritoneal, con presencia de onda asc&iacute;tica, sin palpaci&oacute;n de visceromegalias. El resto del examen f&iacute;sico sin hallazgos anormales. </font></P>     <P><font size="2" face="verdana">La evaluaci&oacute;n paracl&iacute;nica mostr&oacute; marcada eosinofilia perif&eacute;rica (5250 cel/mm<SUP>3</SUP>), serositis (derrame pleural derecho y ascitis) e infiltraci&oacute;n eosinof&iacute;lica abundante en mucosa g&aacute;strica a la evaluaci&oacute;n histopatol&oacute;gica. Los resultados de laboratorio se muestran en la <a href="#tabla1">tabla 1</a> y en las <a href="#figura1">figuras 1</a>, <a href="#figura2">2</a>, <a href="#figura3">3</a> y <a href="#figura4">4</a>.</font></P>     ]]></body>
<body><![CDATA[<P align="center"><font size="2" face="verdana"><a name="tabla1"></a><img src="/img/revistas/RCG/v22n2/a11t1.JPG"></font></P>     <P align="center"><font size="2" face="verdana"><a href="#tabla1">Tabla 1</a>. Resultados de laboratorio</font></P>     <P align="center"><font size="2" face="verdana"><a name="figura1"></a><img src="/img/revistas/RCG/v22n2/a11f1.JPG"></font></P>     <P align="center"><font size="2" face="Verdana"><a href="#figura1">Figura 1</a>. Radiograf&iacute;a de t&oacute;rax: derrame pleural derecho.</font></P>     <P align="center"><font size="2" face="Verdana"><a name="figura2"></a><img src="/img/revistas/RCG/v22n2/a11f2.JPG"></font></P>     <P align="center"><font size="2" face="Verdana"><a href="#figura2">Figura 2</a>. TAC de abdomen: l&iacute;quido libre en cavidad (ascitis moderada).</font></P>     <P align="center"><font size="2" face="Verdana"><a name="figura3"></a><img src="/img/revistas/RCG/v22n2/a11f3.JPG"></font></P>     <P align="center"><font size="2" face="Verdana"><a href="#figura3">Figura 3</a>. Endoscopia de v&iacute;as digestivas altas: engrosamiento de pliegues g&aacute;stricos.</font></P>     <P align="center"><font size="2" face="Verdana"><a name="figura4"></a><img src="/img/revistas/RCG/v22n2/a11f4.JPG"></font></P>     <div align="center"><font size="2" face="verdana"><a href="#figura4">Figura 4</a>. Biopsia g&aacute;strica: mucosa g&aacute;strica con abudante infiltraci&oacute;n eosinof&iacute;lica.</font> </div>     ]]></body>
<body><![CDATA[<P><font size="2" face="Verdana">Se inici&oacute; manejo con albendazol 200 mg/d&iacute;a durante 5 d&iacute;as sin encontrar respuesta cl&iacute;nica favorable. Bajo la sospecha diagn&oacute;stica de DEGI, se inici&oacute; manejo con prednisolona a dosis de 1 mg/kg/d&iacute;a obteniendo respuesta cl&iacute;nica favorable dada por la desaparici&oacute;n de los s&iacute;ntomas una semana despu&eacute;s de instaurado el tratamiento esteroide. Sin embargo, la suspensi&oacute;n paulatina del manejo indicado provoc&oacute; la reca&iacute;da a los 6 meses, requiriendo reinicio de corticoides orales y uso cr&oacute;nico de &eacute;stos a dosis de 5 mg/d&iacute;a. Se realiz&oacute; seguimiento por un a&ntilde;o, sin evidencia de nuevos s&iacute;ntomas asociados a enfermedad de base.</font></P>     <P><font size="2" face="Verdana"><b>Caso 2</b></font></P>     <P><font size="2" face="Verdana">Paciente femenino de 35 a&ntilde;os de edad, sin antecedentes personales ni familiares de importancia, quien consulta por cuadro cl&iacute;nico de un a&ntilde;o de evoluci&oacute;n de diarrea cr&oacute;nica, 5 a 8 deposiciones l&iacute;quidas en ocasiones nocturnas, con lienter&iacute;a, las cuales se acompa&ntilde;aban de dolor abdominal tipo c&oacute;lico, periumbilical, no irradiado, asociado a astenia, malestar general y p&eacute;rdida de peso de aproximadamente 20 kg en los &uacute;ltimos 6 meses. Al examen f&iacute;sico se encontr&oacute; paciente en regulares condiciones generales, mal estado m&uacute;sculo nutricional TA: 120/80, FC: 75 lpm, FR: 20 rpm con examen f&iacute;sico sin hallazgos anormales. La evaluaci&oacute;n paracl&iacute;nica se detalla en la <a href="#tabla2">tabla 2</a>.</font></P>     <P align="center"><font size="2" face="Verdana"><a name="tabla2"></a><img src="/img/revistas/RCG/v22n2/a11t2.JPG"></font></P>     <P align="center"><font size="2" face="Verdana"><a href="#tabla2">Tabla 2</a>. Evaluaci&oacute;n paracl&iacute;nica </font></P>     <P><font size="2" face="verdana">Teniendo en cuenta la presentaci&oacute;n cl&iacute;nica y hallazgos paracl&iacute;nicos que confirman el diagn&oacute;stico, se inicia manejo con prednisona a dosis de 1 mg/kg/d&iacute;a, obteniendo respuesta satisfactoria durante los primeros tres meses del tratamiento dado por desaparici&oacute;n de la diarrea y recuperaci&oacute;n de 7 kg de peso. Tolera destete progresivo de corticoterapia. Actualmente asintom&aacute;tica a un a&ntilde;o de seguimiento.</font></P>     <P><font size="2" face="verdana"><b>Discusi&oacute;n</b></font></P>     <P><font size="2" face="verdana">La DEGI representa un grupo heterog&eacute;neo de trastornos gastrointestinales que afectan tanto a ni&ntilde;os como adultos y se caracterizan por la presencia de un intenso infiltrado eosinof&iacute;lico en la histopatolog&iacute;a de uno o m&uacute;ltiples segmentos desde el es&oacute;fago hasta el recto en ausencia de causas conocidas de eosinofilia como reacciones medicamentosas, infecciones parasitarias y malignidad (11, 12). </font></P>     <P><font size="2" face="verdana"><b>Fisiopatolog&iacute;a</b></font></P>     <P><font size="2" face="verdana">La s&iacute;ntesis de eosin&oacute;filos es realizada en la medula &oacute;sea bajo la influencia de factores de trascripci&oacute;n como GATA-1, GATA-2 y c/EBP as&iacute; como de citoquinas, IL-3, IL-5 y factor estimulante de colonias granulocito-macr&oacute;fago (GM-CSF). La maduraci&oacute;n ocurre a este nivel durante 8 d&iacute;as para posteriormente ser llevados a la circulaci&oacute;n con la ayuda de mol&eacute;culas de adhesi&oacute;n celular, citoquinas y una quimoquina selectiva del eosin&oacute;filo llamada eotaxina. Una vez son liberados, los eosin&oacute;filos se depositan a nivel tisular principalmente en tracto gastrointestinal, timo, &oacute;rganos hematopoy&eacute;ticos y gl&aacute;ndula mamaria. A nivel gastrointestinal, los eosin&oacute;filos sobreviven aproximadamente una semana para luego sufrir apoptosis (13-15).</font></P>     ]]></body>
<body><![CDATA[<P><font size="2" face="verdana">El tracto gastrointestinal es el principal &oacute;rgano no hematopoy&eacute;tico en el que residen los eosin&oacute;filos, donde habitualmente se encuentran alojados en la l&aacute;mina propia, con altas concentraciones en ciego y ap&eacute;ndice, sin embargo, a nivel del epitelio esof&aacute;gico est&aacute;n ausentes en condiciones no inflamatorias (15).</font></P>     <P><font size="2" face="verdana">Los eosin&oacute;filos est&aacute;n implicados en la defensa contra infecciones parasitarias y con los fen&oacute;menos inmunoal&eacute;rgicos, jugando un papel protag&oacute;nico en los DEGI, junto con citoquinas, eotaxinas y linfocitos TH<SUB>2 </SUB>(16-21).</font></P>     <P><font size="2" face="verdana">En los DEGI, la exposici&oacute;n al ant&iacute;geno estimula la s&iacute;ntesis, migraci&oacute;n, adhesi&oacute;n y diap&eacute;desis de los eosin&oacute;filos al sitio de la lesi&oacute;n. Los eosin&oacute;filos no s&oacute;lo act&uacute;an como c&eacute;lulas presentadoras de ant&iacute;genos, sino que median el proceso inflamatorio a trav&eacute;s de unas prote&iacute;nas granulares derivadas de los eosin&oacute;filos (EDGP), las cuales son 4: prote&iacute;na cati&oacute;nica (ECP), neurotoxina (EDN), peroxidasa (EPO) y la prote&iacute;na b&aacute;sica mayor (MBP). Dichas prote&iacute;nas son citot&oacute;xicas en el epitelio intestinal y disparan la degranulaci&oacute;n de los mastocitos y la liberaci&oacute;n de citoquinas como IL-1, IL-3, IL-4, IL-5, IL-13), quimoquinas, eotaxinas, RANTES, mediadores lip&iacute;dicos, leucotrienos, FAP y neuromediadores (Sustancia P, polip&eacute;ptido intestinal vasoactivo) (22, 23).</font></P>     <P><font size="2" face="verdana">Reportes de casos de pacientes con eosinofilia duodenal y rinitis inducida por polen (24), demuestran el papel de los procesos inmunol&oacute;gicos en la inflamaci&oacute;n gastrointestinal y de la v&iacute;a a&eacute;rea mediada por eosin&oacute;filos, mastocitos y citoquinas tipo TH-2. </font></P>     <P><font size="2" face="verdana">Ensayos en animales han demostrado que la exposici&oacute;n repetida a un ant&iacute;geno oral es capaz de producir anticuerpos monoclonales IgE, diarrea e incremento de mastocitos y eosin&oacute;filos tanto en la l&aacute;mina propia del intestino delgado como a nivel s&eacute;rico (25), lo cual se traduce cl&iacute;nicamente en gastromegalia, dismotilidad y caquexia, correlacion&aacute;ndose con DEGI en humanos (26-28).</font></P>     <P><font size="2" face="verdana"><b>Cl&iacute;nica</b></font></P>     <P><font size="2" face="verdana">Los DEGI son reconocidos en ni&ntilde;os y adultos, pero son m&aacute;s frecuentemente diagnosticados en la tercera d&eacute;cada de la vida. La eosinofilia perif&eacute;rica es vista en el 50-100% de los casos pero no se considera un prerrequisito para el diagn&oacute;stico (6-8). Antecedentes de alergia pueden encontrarse en el 25-75%, pero la definici&oacute;n y la naturaleza de la alergia var&iacute;a de un estudio a otro. </font></P>     <P><font size="2" face="verdana">Los criterios diagn&oacute;sticos universalmente aceptados actualmente incluyen la manifestaci&oacute;n de s&iacute;ntomas gastrointestinales, presencia de infiltrado eosinof&iacute;lico en histopatolog&iacute;a y la exclusi&oacute;n de otras causas de eosinofilia. Los DEGI se clasifican en los subtipos primario y secundario. El subtipo primario incluye las variantes at&oacute;picas, no at&oacute;picas y familiares, mientras que el subtipo secundario se divide en 2 grupos, uno compuesto de des&oacute;rdenes eosinof&iacute;licos sist&eacute;micos y otro conformado por trastornos no eosinof&iacute;licos (30).</font></P>     <P><font size="2" face="verdana">La forma familiar no ha sido bien caracterizada pero es vista en aproximadamente el 10% de los pacientes (datos no publicados) (29). Los DEGI primarios a su vez se clasifican de acuerdo al nivel de compromiso histol&oacute;gico en las formas mucosa, muscular y serosa (Klein, 1970) (31).</font></P>     <P><font size="2" face="verdana">La localizaci&oacute;n y la profundidad de la infiltraci&oacute;n eosinof&iacute;lica determinan la presentaci&oacute;n cl&iacute;nica, encontr&aacute;ndose el est&oacute;mago (26-81%) y el intestino delgado (28-100%) como las &aacute;reas m&aacute;s frecuentemente afectadas, y en menor proporci&oacute;n el es&oacute;fago, colon y recto (4).</font></P>     ]]></body>
<body><![CDATA[<P><font size="2" face="verdana">Klein (31) clasific&oacute; los DEGI bas&aacute;ndose en la profundidad de la infiltraci&oacute;n eosinof&iacute;lica as&iacute;</font></P>     <P><font size="2" face="verdana"><B>Mucosa</B>: es el subtipo m&aacute;s com&uacute;n (25-100%). Habitualmente se correlaciona con s&iacute;ntomas inespec&iacute;ficos como dolor abdominal, n&aacute;usea, v&oacute;mito, diarrea, sangre oculta en heces, anemia o enteropat&iacute;a perdedora de prote&iacute;nas (32). Debido a su naturaleza inespec&iacute;fica, estas presentaciones cl&iacute;nicas pueden ser confundidas con s&iacute;ndrome de intestino irritable, dispepsia, pancreatitis, apendicitis aguda o enfermedad inflamatoria intestinal (5, 8, 9)</font></P>     <P><font size="2" face="verdana"><B>Muscular</B>: representa el 13-70% de todos los subtipos de GE y se presenta con signos y s&iacute;ntomas de obstrucci&oacute;n g&aacute;strica e intestinal (yeyuno principalmente), dados por dolor abdominal tipo c&oacute;lico y signos de estenosis hipertr&oacute;fica pil&oacute;rica en ni&ntilde;os (33, 34).</font></P>     <P><font size="2" face="verdana"><B>Serosa</B>: ocurre en 12-40% de los casos, y t&iacute;picamente se presenta como ascitis (4, 6). Esta forma cl&iacute;nica, comparada con las anteriores, se ha reportado asociada a edema significativo, con o sin altos niveles de eosinofilia perif&eacute;rica y una mejor respuesta a esteroides (4, 35, 36). </font></P>     <P><font size="2" face="verdana">Debido al amplio espectro de presentaci&oacute;n cl&iacute;nica (dolor abdominal, dismotilidad g&aacute;strica, v&oacute;mito, ictericia (37), diarrea, disfagia, anemia microc&iacute;tica e hipoproteinemia) la evaluaci&oacute;n diagn&oacute;stica para DEGI deber&iacute;a ser realizada en todos los pacientes con estos problemas refractarios, especialmente en individuos con historia familiar de enfermedades al&eacute;rgicas, eosinofilia perif&eacute;rica y/o historia familiar de DEGI. Dependiendo del segmento intestinal comprometido, la frecuencia de s&iacute;ntomas espec&iacute;ficos var&iacute;a desde diarrea y dolor abdominal en la GE y disfagia en EE, pero estos s&iacute;ntomas no son patognom&oacute;nicos. Si se sospecha una DEGI basados en la presentaci&oacute;n cl&iacute;nica o en espec&iacute;menes de biopsia gastrointestinal, se deber&iacute;a considerar la realizaci&oacute;n de ex&aacute;menes adicionales para descartar la posibilidad de otro proceso secundario como hipersensibilidad a medicamentos, enfermedad del col&aacute;geno, malignidad o infecci&oacute;n.</font></P>     <P><font size="2" face="verdana">Los dos pacientes presentados se encuentran dentro del rango de edad establecido, en la tercera a quinta d&eacute;cadas, e ilustran la variedad cl&iacute;nica ya descrita, en los cuales se encontr&oacute; un espectro que va desde la afectaci&oacute;n mixta, mucosa g&aacute;strica y compromiso de serosas, que justifica la presentaci&oacute;n con emesis, diarrea, dolor abdominal inespec&iacute;fico, derrame pleural y ascitis como en el caso 1 (compromiso seroso) hasta la afectaci&oacute;n de m&uacute;ltiples segmentos a nivel intestinal, duodeno y colon, que llev&oacute; a s&iacute;ndrome malabsortivo con repercusi&oacute;n importante en el estado nutricional con p&eacute;rdida de 20 kg de peso y anemia microc&iacute;tica e hipocr&oacute;mica, plasmado en el caso 2 (compromiso mucoso).</font></P>     <P><font size="2" face="verdana"><b>Enfoque diagn&oacute;stico</b></font></P>     <P><font size="2" face="verdana">La valoraci&oacute;n comienza con una anamnesis detallada y un examen f&iacute;sico completo para luego continuar con la evaluaci&oacute;n diagn&oacute;stica que comienza con la b&uacute;squeda de par&aacute;sitos intestinales ya sea a trav&eacute;s de coproparasitosc&oacute;pico, aspirado intestinal durante la endoscopia o t&iacute;tulos de anticuerpos s&eacute;ricos espec&iacute;ficos, especialmente cuando son pacientes con alto riesgo de exposici&oacute;n. Se debe considerar la paracentesis con an&aacute;lisis de l&iacute;quido asc&iacute;tico en casos de ascitis.</font></P>     <P><font size="2" face="verdana">La evaluaci&oacute;n de la presencia de alergias incluye el incluye el empleo de elementos como test de punciones cut&aacute;neas (SPT) y test radioalergoabsorbente (RAST) que detectan anticuerpos IgE espec&iacute;ficos a al&eacute;rgenos inhalados e ingeridos. Es preciso evaluar cautelosamente estos test debido a la falta de sensibilidad y especificidad y alta tasa de falsos positivos. La utilidad de estos test no ha sido estudiada espec&iacute;ficamente en GE pero el empleo de parches combinados con SPT ha permitido identificar alergias alimentarias con mayor exactitud que la SPT sola (38).</font></P>     <P><font size="2" face="verdana">La cuantificaci&oacute;n de los niveles de IgE total tiene significado en la estratificaci&oacute;n de los pacientes con variantes at&oacute;picas de DEGI o sugiere la consideraci&oacute;n de infecciones parasitarias ocultas. Se ha encontrado que los pacientes con variantes at&oacute;picas de DEGI tienen evidencia de sensibilizaci&oacute;n a un promedio de 14 diferentes grupos de alimentos (30).</font></P>     ]]></body>
<body><![CDATA[<P><font size="2" face="verdana">Los cambios radiol&oacute;gicos incluyen una superficie antral irregular en el estudio baritado del tracto gastrointestinal, adem&aacute;s del signo del cord&oacute;n que puede estar presente en caso de obstrucci&oacute;n g&aacute;strica debido a GE astral (35). La infiltraci&oacute;n eosinof&iacute;lica del intestino delgado se manifiesta como engrosamiento de los pliegues circulares y de la pared (39). El esofagograma con bario puede demostrar la EE esten&oacute;tica la cual se localiza en el tercio medio y proximal del es&oacute;fago.</font></P>     <P><font size="2" face="verdana">La ecograf&iacute;a abdominal es &uacute;til para evaluar la presencia de ascitis. La TAC de abdomen puede mostrar pliegues nodulares, irregulares y engrosamiento del est&oacute;mago e intestino delgado. La infiltraci&oacute;n profunda puede llevar a asas intestinales r&iacute;gidas, simulando un linfoma (40). La gamagraf&iacute;a con leucocitos marcados puede ser usada para determinar la extensi&oacute;n de la inflamaci&oacute;n pero no es de utilidad para diferenciarla de otras causas de inflamaci&oacute;n intestinal (41).</font></P>     <P><font size="2" face="verdana">El diagn&oacute;stico definitivo de DEGI es dependiente de la evaluaci&oacute;n microsc&oacute;pica de muestras de tejido tomados por v&iacute;a endosc&oacute;pica, con especial atenci&oacute;n al tama&ntilde;o, localizaci&oacute;n y caracter&iacute;sticas la afectaci&oacute;n eosinof&iacute;lica. En ocasiones, esta entidad cursa con compromiso focal de la mucosa, requiriendo el an&aacute;lisis de m&uacute;ltiples muestras de tejido de cada segmento intestinal (42).</font></P>     <P><font size="2" face="verdana">A nivel macrosc&oacute;pico, la gastroenteritis eosinof&iacute;lica (GE) puede presentarse con anormalidades como eritema, moteado blanquecino, erosiones focales, ulceraciones, engrosamiento de pliegues y friabilidad (43). Los criterios histol&oacute;gicos son ambiguos, dado que normalmente los eosin&oacute;filos residentes en la mucosa tienen baja densidad a nivel g&aacute;strico pero a nivel de ap&eacute;ndice, ileon terminal, ciego y colon proximal alcanzan una mayor densidad (&gt; 30 eosin&oacute;filos/campo de alto poder-cap) (44). Los hallazgos de eosin&oacute;filos degranulados y prote&iacute;na cati&oacute;nica eosinof&iacute;lica en la mucosa intestinal se acompa&ntilde;an de da&ntilde;o histol&oacute;gico en GE (45). La laparoscopia o la exploraci&oacute;n quir&uacute;rgica abierta es m&aacute;s &uacute;til para establecer el diagn&oacute;stico de enfermedad muscular y serosa. Los hallazgos principales de la GE serosa son ascitis, n&oacute;dulos blanquecinos y engrosamiento del peritoneo parietal y visceral (36).</font></P>     <P><font size="2" face="verdana">Las caracter&iacute;sticas macrosc&oacute;picas del es&oacute;fago en la EE incluyen estr&iacute;as lineales verticales, anillos, granularidad, apariencia de papel crep&eacute; y exudado blanquecino (46-48). A nivel histol&oacute;gico, el hallazgo de &gt;15 eosin&oacute;filos por cap sugiere el diagn&oacute;stico (49, 50). Otros hallazgos histol&oacute;gicos incluyen la preferencia por la localizaci&oacute;n yuxtaluminal de los eosin&oacute;filos, eosin&oacute;filos degranulados, abscesos de eosin&oacute;filos, papilas alongadas e hiperplasia de la l&aacute;mina basal muy prominente.</font></P>     <P><font size="2" face="verdana">La diferenciaci&oacute;n de los DEGI de una condici&oacute;n normal tiene en cuenta varios factores como: </font></P>     <P><font size="2" face="verdana">1. Cuantificaci&oacute;n de eosin&oacute;filos. </font>     <P><font size="2" face="verdana">2. Localizaci&oacute;n de eosin&oacute;filos, donde su presencia en posiciones anormales como intraepitelial, mucosa superficial y regiones cr&iacute;pticas intestinales. </font>     <P><font size="2" face="verdana">3. La presencia extracelular de constituyentes eosinof&iacute;licos (como gr&aacute;nulos libres).</font>     <P><font size="2" face="verdana">4. Anormalidades patol&oacute;gicas asociadas como hiperplasia epitelial en EE.</font>     ]]></body>
<body><![CDATA[<P><font size="2" face="verdana">5. La presencia de hallazgos patol&oacute;gicos sugestivos de otros des&oacute;rdenes secundarios como neutrofilia asociada con enfermedad inflamatoria intestinal o vasculitis asociada a s&iacute;ndrome de Churg-Strauss (30).</font>     <P><font size="2" face="verdana">El diagn&oacute;stico diferencial de los DEGI incluye:</font>     <P><font size="2" face="verdana">1.  Infecciones: infecciones parasitarias (51), infecci&oacute;n por H. pylori (52).</font>     <P><font size="2" face="verdana">2.  </font><font size="2" face="verdana">Reacciones medicamentosas: azatioprina, gemfibrozil, enalapril, carbamazepina y clofazimina. El cotrimoxazol se ha asociado a ascitis eosinof&iacute;lica (53-58).</font>     <P><font size="2" face="verdana">3. Enfermedades del tejido conectivo: esclerodermia, dermatomiositis, polimiositis (59, 60).</font>     <P><font size="2" face="verdana">4. Vasculitis: s&iacute;ndrome de Churg-Strauss y poliarteritis nodosa (61).</font>     <P><font size="2" face="verdana">5. P&oacute;lipos fibroides inflamatorios.</font>     <P><font size="2" face="verdana">6. S&iacute;ndrome hipereosinof&iacute;lico.</font>     <P><font size="2" face="verdana">7. Enfermedad inflamatoria intestinal.</font>     <P><font size="2" face="verdana">8. Enfermedad celiaca.</font>     ]]></body>
<body><![CDATA[<P><font size="2" face="verdana">9. Transplante (10).</font>     <P><font size="2" face="verdana">Ninguno de los dos pacientes tuvo antecedentes de atop&iacute;a y los hallazgos paracl&iacute;nicos de eosinofilia e infiltraci&oacute;n eosinof&iacute;lica en ausencia de par&aacute;sitos confirmaron el diagn&oacute;stico.</font>     <P><font size="2" face="verdana"><b>Tratamiento</b></font></P>     <P><font size="2" face="verdana">La elecci&oacute;n de las distintas opciones terap&eacute;uticas disponibles est&aacute; condicionada por la sintomatolog&iacute;a predominante, que a su vez deriva del distinto grado de afectaci&oacute;n mural. Las estrategias terap&eacute;uticas disponibles actualmente se fundamentan en la evidencia aportada por reportes de casos y series de casos para una variedad de agentes que incluyen dietas especiales, corticoides, estabilizadores de la membrana del mastocito, antihistam&iacute;nicos y antagonistas de leucotrienos.</font></P>     <P><font size="2" face="verdana">Se plantea inicialmente el manejo conservador y seguimiento cl&iacute;nico en casos de enfermedad leve y de aparici&oacute;n espor&aacute;dica. En los casos de enfermedad sintom&aacute;tica los corticoides representan la piedra angular del tratamiento. En aquellos casos en donde haya refractariedad o contraindicaciones para el uso de corticoides existe un grupo de opciones farmacol&oacute;gicas que ser&aacute;n descritas m&aacute;s adelante.</font></P>     <P><font size="2" face="verdana">Dieta: la eliminaci&oacute;n del consumo dietario de los alimentos implicados en los test cut&aacute;neos de alergias tiene efectos variables, pero la resoluci&oacute;n completa es lograda generalmente con dietas elementales basadas en amino&aacute;cidos (62). Una vez se haya logrado la remisi&oacute;n de la enfermedad con la modificaci&oacute;n dietaria, el grupo espec&iacute;fico de alimentos es reintroducido lentamente, cada tres semanas por cada grupo de alimentos y el seguimiento endosc&oacute;pico se debe realizar para identificar la remisi&oacute;n sostenida o las reca&iacute;das.</font></P>     <P><font size="2" face="verdana">Esteroides: los efectos ben&eacute;ficos de los esteroides en los des&oacute;rdenes eosinof&iacute;licos son mediados por la inhibici&oacute;n de factores de crecimiento del eosin&oacute;filo, IL-3, IL-5 y GM-CSF. Los esteroides proveen el alivio r&aacute;pido y efectivo de los s&iacute;ntomas pero la respuesta a largo plazo y la correlaci&oacute;n histol&oacute;gica no han sido estudiadas en forma prospectiva en GE. A pesar de su conocida eficacia, el uso a largo plazo de los esteroides debe evitarse debido al n&uacute;mero de efectos adversos relacionados con el uso de estos medicamentos. </font></P>     <P><font size="2" face="verdana">La mayor&iacute;a de los esquemas empleados sugieren dosis de 1-2 mg/kg/d&iacute;a por v&iacute;a oral por 8 semanas y disminuci&oacute;n progresiva en 6 a 8 semanas para inducir remisi&oacute;n. Las reca&iacute;das son frecuentes requiriendo reinicio de la terapia. El uso de esteroides es de primera elecci&oacute;n tanto para pacientes al&eacute;rgicos como no al&eacute;rgicos que no responden al manejo dietario (10).</font></P>     <P><font size="2" face="verdana">En pacientes con EE el uso de fluticasona como esteroide t&oacute;pico es una alternativa segura y efectiva a los esteroides sist&eacute;micos. Otra forma de aplicaci&oacute;n t&oacute;pica de esteroides con potencial aplicaci&oacute;n en GE es la budesonida de cubierta no ent&eacute;rica en pacientes con GE que afecta ileon y colon derecho (63-65).</font></P>     <P><font size="2" face="verdana">Estabilizadores de la membrana del mastocito: la efectividad del cromoglicato de sodio y ketotifeno en GE se limita a reportes de caso en donde han usado estos agentes. El uso de cromoglicato de sodio a dosis de 200 mg cuatro veces al d&iacute;a ha mostrado ser eficaz en casos de la variedad serosa de la GE. En cuanto al ketotifeno, dosis de 2-4 mg/d&iacute;a por 1 a 4 meses ha sido efectivo en mejorar los s&iacute;ntomas y la eosinofilia perif&eacute;rica e intestinal en pacientes con GE (66-69).</font></P>     ]]></body>
<body><![CDATA[<P><font size="2" face="verdana">Antagonistas de receptores de leucotrienos: el empleo de montelukast a dosis de 10-40 mg/d&iacute;a por v&iacute;a oral ha mostrado mejor&iacute;a de la eosinofilia y de los s&iacute;ntomas (70-75). Otro medicamento relacionado, suplatast tosilato, bajo investigaci&oacute;n en asma, ha sido reportado como &uacute;til en el tratamiento de pacientes con GE </font><font size="2" face="verdana">(76)</font>.</P>     <P><font size="2" face="verdana">Anti-interleukina-5 (mepolizumab): el empleo de tres dosis de anti-IL-5 cada 4 semanas durante 12 semanas disminuy&oacute; la eosinofilia perif&eacute;rica y mejor&oacute; la calidad de vida en cuatro pacientes con s&iacute;ndrome hipereosinof&iacute;lico. Un paciente con s&iacute;ndrome hipereosinof&iacute;lico y EE respondi&oacute; a anti-IL5 con una reducci&oacute;n 10 veces de la eosinofilia tisular y mejor&iacute;a significativa en el v&oacute;mito y la disfagia (77).</font></P>     <P><font size="2" face="verdana">Tratamientos nuevos y emergentes: actualmente se encuentra bajo investigaci&oacute;n la efectividad de agentes antieosin&oacute;filos como mol&eacute;culas de adhesi&oacute;n selectivas de eosin&oacute;filos, un anticuerpo monoclonal antieotaxina (CAT-213) y agentes que inducen apoptosis celular (78).</font></P>     <P><font size="2" face="verdana">Dilataci&oacute;n esof&aacute;gica y cirug&iacute;a: el manejo quir&uacute;rgico se encuentra reservado para aquellos pacientes con obstrucci&oacute;n o perforaci&oacute;n. La resecci&oacute;n del segmento obstruido es &uacute;til en el alivio de s&iacute;ntomas, pero los s&iacute;ntomas pueden recurrir o persistir, requiriendo seguimiento estrecho y terapia m&eacute;dica adjunta (79).</font></P>     <P><font size="2" face="verdana">La dilataci&oacute;n de la estenosis esof&aacute;gica puede ser considerada como terapia inicial para el alivio sintom&aacute;tico en pacientes con disfagia e impactaci&oacute;n de los alimentos (80).</font></P>     <P><font size="2" face="verdana">La respuesta al uso de corticoides fue satisfactoria en ambos pacientes, sin embargo, el paciente 1 present&oacute; una nueva reca&iacute;da con el destete de los corticoides, permaneciendo dependiente a dosis bajas. Hasta el momento, en ambos casos hubo una mejor&iacute;a notoria no s&oacute;lo a nivel cl&iacute;nico sino a nivel de calidad de vida, reafirmando el uso de corticoides como la opci&oacute;n terap&eacute;utica fundamental en esta enfermedad.</font></P>     <P><font size="2" face="verdana"><b>Pron&oacute;stico</b></font></P>     <P><font size="2" face="verdana">La historia natural de la gastritis, enteritis y DEGI, no ha sido bien documentada, sin embargo, estas enfermedades son de curso cr&oacute;nico. El compromiso gastrointestinal var&iacute;a de un momento a otro, requiriendo evaluaci&oacute;n endosc&oacute;pica rutinaria. En pacientes donde claramente se ha identificado la enfermedad inducida por ant&iacute;genos alimentarios, los niveles anormales de IgE circulante y eosin&oacute;filos a menudo sirven como marcadores para compromiso tisular. </font></P>     <P><font size="2" face="verdana">Cuando la enfermedad se presenta en la infancia y se ha identificado sensibilizaci&oacute;n a alimentos, existe la alta probabilidad de remisi&oacute;n de la enfermedad en la infancia tard&iacute;a (30).</font></P>     <P><font size="2" face="verdana"><b>Conclusiones</b></font></P>     ]]></body>
<body><![CDATA[<P><font size="2" face="verdana">Los DEGI son entidades poco comunes, sin embargo, constituyen una opci&oacute;n en el diagn&oacute;stico diferencial de trastornos gastrointestinales cr&oacute;nicos refractarios a las terapias convencionales. Dada la heterogeneidad de su presentaci&oacute;n cl&iacute;nica, un alto &iacute;ndice de sospecha es necesario para llegar a su diagn&oacute;stico. Las opciones terap&eacute;uticas no est&aacute;n fundamentadas a&uacute;n en ensayos cl&iacute;nicos controlados, sin embargo los corticoides constituyen la piedra angular del tratamiento. Aunque se han identificado el papel del eosin&oacute;filo, de citoquinas como la IL-5 y de quimoquinas como la eotaxina en la fisiopatolog&iacute;a de la enfermedad, queda a&uacute;n por determinar las bases moleculares y celulares que en &uacute;ltimas contribuir&iacute;an a dise&ntilde;ar estrategias terap&eacute;uticas m&aacute;s espec&iacute;ficas para esta entidad. </font></P>     <P><font size="2" face="verdana"><B>Referencias</B></font></P>     <!-- ref --><P><font size="2" face="verdana">1. Kaijser R. Allergic disease of the gut from the point of view of the surgeon. Arch Klin Chir 1937; 188: 36-64.</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000105&pid=S0120-9957200700020001100001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><P><font size="2" face="verdana">2. Whitinton P &amp; Whitinton G. Eosinophilic gastroenteropathy in childhood. J Pediatr Gastroenterol Nutr 1988; 7: 379-385.</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000106&pid=S0120-9957200700020001100002&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><P><font size="2" face="verdana">3. Naylor AR. Eosinophilic gastroenteritis. Scott Med J 1990; 35: 163-165.</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000107&pid=S0120-9957200700020001100003&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><P><font size="2" face="verdana">4. Talley NJ, Shorter RG, Phillips SF, et al. Eosinophilic gastroenteritis: a clinicopathological study of patients with disease of the mucosa, muscle layer, and subserosal tissues. Gut 1990; 31: 54-58.</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000108&pid=S0120-9957200700020001100004&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><P><font size="2" face="verdana">5. Lee CM, Changchien CS, Chen PC et al. Eosinophilic gastroenteritis: 10 years experience. Am J Gastroenterol 1993; 88: 70-74.</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000109&pid=S0120-9957200700020001100005&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><P><font size="2" face="verdana">6. Venkataraman S, Ramakrishna BS, Mathan M et al. Eosinophilic gastroenteritis – an Indian experience. Indian J Gastroenterol 1998; 17: 148-149.</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000110&pid=S0120-9957200700020001100006&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><P><font size="2" face="verdana">7. Chen MJ, Chu CH, Lin SC, et al. Eosinophilic gastroenteritis: clinical experience with 15 patients. World J Gastroenterol 2003; 9: 2813-2816.</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000111&pid=S0120-9957200700020001100007&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><P><font size="2" face="verdana">8. Redondo-Cerezo E, Cabello MJ, Gonz&aacute;lez Y, et al. Eosinophilic gastroenteritis: our recent experience: one - year experience of atypical onset of an uncommon disease. Scand J Gastroenterol 2001; 36: 1358-1360. </font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000112&pid=S0120-9957200700020001100008&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><P><font size="2" face="verdana">9. Kalantar SJ, Marks R, Lambert JR, et al. Dyspepia due to eosinophilic gastroenteritis. 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J Exp Med 2002; 195: 1379-1386.</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000117&pid=S0120-9957200700020001100013&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><P><font size="2" face="verdana">14. Egesten A, Andersson P &amp; Persson T. Eosinophils in gastrointestinal inflammation: from innocent bystanders to offenders. Scand J Gastroenterol 2002; 37: 117-1125.</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000118&pid=S0120-9957200700020001100014&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><P><font size="2" face="verdana">15. Straumann A &amp; Simon HU. 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