<?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>0034-7531</journal-id>
<journal-title><![CDATA[Revista Cubana de Pediatría]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Cubana Pediatr]]></abbrev-journal-title>
<issn>0034-7531</issn>
<publisher>
<publisher-name><![CDATA[Centro Nacional de Información de Ciencias MédicasEditorial Ciencias Médicas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0034-75312006000400009</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Malformación venosa de íleon terminal]]></article-title>
<article-title xml:lang="en"><![CDATA[Venous malformation of the terminal ileum]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Montero Reyes]]></surname>
<given-names><![CDATA[Idalmis]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez Cardet]]></surname>
<given-names><![CDATA[Luis Francisco]]></given-names>
</name>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González Fernández]]></surname>
<given-names><![CDATA[Sara]]></given-names>
</name>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Moreno Díaz]]></surname>
<given-names><![CDATA[Horacio]]></given-names>
</name>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Carrillo Soriano]]></surname>
<given-names><![CDATA[Salvador]]></given-names>
</name>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez Nieves]]></surname>
<given-names><![CDATA[Yudamis]]></given-names>
</name>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Hospital Pediátrico Docente William Soler  ]]></institution>
<addr-line><![CDATA[Ciudad de La Habana ]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2006</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2006</year>
</pub-date>
<volume>78</volume>
<numero>4</numero>
<fpage>0</fpage>
<lpage>0</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S0034-75312006000400009&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S0034-75312006000400009&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S0034-75312006000400009&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[El sangrado digestivo bajo en pediatría es infrecuentemente causado por malformaciones vasculares. Se presenta un adolescente con una malformación venosa de íleon terminal que se inició con sangrado y obstrucción intestinal y se muestran sus características radiológicas e histológicas, así como la técnica quirúrgica empleada para la resección.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Malformación vascular]]></kwd>
<kwd lng="es"><![CDATA[hemangioma cavernoso]]></kwd>
<kwd lng="es"><![CDATA[sangrado digestivo]]></kwd>
<kwd lng="es"><![CDATA[obstrucción intestinal]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <h3>Presentaci&oacute;n de casos</h3>     <p>  Hospital Pedi&aacute;trico Docente &laquo;William Soler&raquo;</p> <h2><strong>Malformaci&oacute;n venosa de &iacute;leon  terminal</strong></h2>     <p><a href="#cargo">Dra. Idalmis Montero Reyes,<span class="superscript">1</span> Dr. Luis Francisco Mart&iacute;nez Cardet,<span class="superscript">2</span> Dra. Sara Gonz&aacute;lez Fern&aacute;ndez,<span class="superscript">3</span> Dr. Horacio Moreno D&iacute;az,<span class="superscript">4</span> Dr. Salvador  Carrillo Soriano<span class="superscript">5</span> y Dra. Yudamis Mart&iacute;nez Nieves<span class="superscript">6</span> </a><a name="autor" id="autor"></a></p>     <p>&nbsp;</p>     <p>&nbsp;</p>     <blockquote>   <hr />   <h4>RESUMEN</h4>       <p align="justify"> El sangrado digestivo bajo en pediatr&iacute;a es infrecuentemente  causado por malformaciones vasculares. Se presenta un adolescente con una malformaci&oacute;n  venosa de &iacute;leon terminal que se inici&oacute; con sangrado y obstrucci&oacute;n intestinal y  se muestran sus caracter&iacute;sticas radiol&oacute;gicas e histol&oacute;gicas, as&iacute; como la  t&eacute;cnica quir&uacute;rgica empleada para la resecci&oacute;n.</p>       <p align="justify"><em>Palabras clave</em>: Malformaci&oacute;n vascular, hemangioma cavernoso, sangrado digestivo,  obstrucci&oacute;n intestinal.</p>   <hr />       <p align="justify">&nbsp;</p> </blockquote>     <p align="justify">El sangrado digestivo bajo en pediatr&iacute;a es frecuentemente causado  por fisuras anales, p&oacute;lipos, divert&iacute;culo de Meckel, invaginaci&oacute;n o  enterocolitis necrotizante.<span class="superscript">1</span> Las malformaciones vasculares son raras y no  representan una causa frecuente de sangrado gastrointestinal; sin embargo  pueden causar hemorragia aguda, de forma masiva o cr&oacute;nicas inocuas. El fallo en  el diagn&oacute;stico es com&uacute;n y la localizaci&oacute;n intraoperatoria de estas lesiones es usualmente  muy dif&iacute;cil; por eso suele ser el tema de reporte de casos o de escasas series.<span class="superscript">2-7</span></p>     ]]></body>
<body><![CDATA[<p align="justify">  Presentamos el caso de un adolescente con sangrado digestivo y  obstrucci&oacute;n intestinal como forma de inicio de una malformaci&oacute;n venosa de &iacute;leon  terminal.</p> <h4><br />   DESCRIPCI&Oacute;N DEL CASO</h4>     <p align="justify">  Adolescente masculino de 17 a&ntilde;os con antecedentes de alergia alimentaria  y &nbsp;sangramiento digestivo de etiolog&iacute;a no  precisada hace 5 a&ntilde;os, a pesar de estudios endosc&oacute;picos (duodenoscopia y colonoscopia)  y radiol&oacute;gicos (tr&aacute;nsito intestinal) normales. </p>     <p align="justify">  El paciente ingresa en el servicio de cirug&iacute;a con v&oacute;mitos, dolor  abdominal a tipo c&oacute;lico y patr&oacute;n radiol&oacute;gico compatible con oclusi&oacute;n intestinal  mec&aacute;nica (figura 1). Se decide laparotom&iacute;a exploradora y se encuentra a nivel  de &iacute;leon terminal a &plusmn; 30&nbsp;cm  de la v&aacute;lvula ileocecal una masa vascular venosa volvulada sin compromiso  vascular. Se realiza resecci&oacute;n y anastomosis termino-terminal. El estudio  anatomopatol&oacute;gico informa: malformaci&oacute;n venosa de &iacute;leon terminal (figura 2).</p>     <p align="center"><a href="/img/revistas/ped/v78n4/f0109406.jpg"><img src="/img/revistas/ped/v78n4/f0109406.jpg" alt="Figura 1" width="287" height="343" border="0" /></a></p>     
<blockquote>       <p>Figura 1.<strong> </strong>Radiograf&iacute;a  simple de abdomen de pie donde se observan asas intestinales delgadas<strong> </strong>con niveles hidroa&eacute;reos.</p> </blockquote>     <p align="center"><br />     <a href="/img/revistas/ped/v78n4/f0209406.jpg"><img src="/img/revistas/ped/v78n4/f0209406.jpg" alt="Figura 2" width="294" height="281" border="0" /></a></p>     
<blockquote>       <p align="justify">Figura 2.<strong> </strong>Fragmento de  &iacute;leon con mucosa y  submucosa con numerosos espacios llenos de sangre irregulares (que atraviesan  la muscular hasta la superficie serosa), con conductos vasculares revestidos  con c&eacute;lulas endoteliales aplanadas con n&uacute;cleos aplanados o rollizos con paredes  compuestas de tejido fibroso. (HE x 40).<strong>&nbsp; </strong></p> </blockquote>     <p>&nbsp;</p> <h4>DISCUSI&Oacute;N</h4>     ]]></body>
<body><![CDATA[<p align="justify">  Aunque las causas m&aacute;s frecuentes son bien conocidas; a veces  determinar la causa del sangrado representa un reto, especialmente si la fuente  es oscura o la condici&oacute;n subyacente es de aparici&oacute;n rara como es el caso de las  anomal&iacute;as vasculares. Las malformaciones venosas son frecuentemente confundidas  con hemangiomas (frecuentemente de forma impropia llamados hemangiomas  cavernosos). Por eso el diagn&oacute;stico de una malformaci&oacute;n visceral es  frecuentemente sugerido por la edad del paciente, la presentaci&oacute;n cl&iacute;nica y la  aparici&oacute;n de lesiones cut&aacute;neas asociadas. El hemangioma es una afecci&oacute;n de la  infancia, que cuando presenta una localizaci&oacute;n intestinal raramente sangra  despu&eacute;s que la fase proliferativa ha terminado. Es dif&iacute;cil atribuir el sangrado  gastrointestinal a hemangiomas despu&eacute;s de 2 a&ntilde;os de edad.<span class="superscript">8</span></p>     <p align="justify">  Aunque se describen un n&uacute;mero considerable de malformaciones  vasculares rectales,<span class="superscript">9-13</span> las localizaciones g&aacute;stricas,<span class="superscript">14</span> duodenales,<span class="superscript">15</span>  yeyunales,<span class="superscript">16,17</span> a nivel del ciego<span class="superscript">18</span> y col&oacute;nicas<span class="superscript">19,20</span> son raras. No  encontramos referencias de malformaciones a nivel del &iacute;leon terminal en pediatr&iacute;a.</p>     <p align="justify">  Los factores que determinan la localizaci&oacute;n del sitio dependen del  sangrado y la localizaci&oacute;n de la lesi&oacute;n. Las modalidades diagn&oacute;sticas (endoscopias  superior e inferior, gammagraf&iacute;as, angiograf&iacute;as selectivas, laparotom&iacute;as exploradoras  e incluso el examen post m&oacute;rtem) pueden fallar en la localizaci&oacute;n del sitio de  la hemorragia. A veces la zona de la hemorragia permanece no precisada entre  5-7&nbsp;% en pacientes adultos.<span class="superscript">21</span> Aziz y col. sugieren considerar la  posibilidad de una malformaci&oacute;n vascular digestiva si existen alteraciones  vasculares perif&eacute;ricas en un paciente con sangrado digestivo.<span class="superscript">5</span> Sin embargo,  en ausencia de estigmas perif&eacute;ricos siempre condiciones similares resultar&aacute;n un  diagn&oacute;stico desafiante, una curiosidad cient&iacute;fica y una prueba discernimiento  para la pediatr&iacute;a contempor&aacute;nea.</p>     <p>&nbsp;</p> <h4>REFERENCIAS BIBLIOGR&Aacute;FICAS </h4>     <p>1. Vinton NE. Gastrointestinal       bleeding in infancy and childhood. Gastrointest Clin North Am 1994; 23:93&ndash;122.</p>     <!-- ref --><p>2. Kanai       M, Noike M, Masaki C, Kita N, Ashida T, Kobayashi T, Konishi I. Severe       gastrointestinal bleeding during pregnancy in a case of blue rubber bleb       nevus syndrome. Semin Thromb Hemost 2005; 31(3):284-9.<!-- ref --><p>3. Yoshida       R, Takada H, Iwamoto S, Mouri T, Uedono Y, Kawanishi H, <em>et al.</em> Malignant       hemangioendothelioma of the small intestine: report of a case. Surg Today       1999; 29(5):439-42.<!-- ref --><p>4. Alvarez       Sanchez JA, Fernandez Lobato R, Coba Ceballos J, Fradejas Lopez JM, Marin       Lucas J, Moreno Azcoita M. Epithelioid hemangioendothelioma localized in       the small intestine. Gastroenterol Hepatol. 1995; 18(9):464-7.<!-- ref --><p>5. Aziz       A, Kane TD, Meza MP, Vaughan KG, Hackam DJ. 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Ciudad de La Habana, Cuba<br />   Correo electr&oacute;nico: <a href="mailto:lmcardet@infomed.sld.cu">lmcardet@infomed.sld.cu</a> </p>     <p>&nbsp;</p>     <p align="left"><a href="#autor">1 Especialista de I Grado en Pediatr&iacute;a. <br /> 2 Especialista de I Grado en Gastroenterolog&iacute;a. <br /> 3 Especialista de I Grado en Cirug&iacute;a Pedi&aacute;trica.<br /> 4 Residente de 3er A&ntilde;o de Pediatr&iacute;a.<br /> 5 Especialista de I Grado en Cirug&iacute;a Pedi&aacute;trica.<br /> 6 Especialista de I Grado en Anatom&iacute;a Patol&oacute;gica. </a><a name="cargo" id="cargo"></a>      ]]></body><back>
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