<?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>1561-3194</journal-id>
<journal-title><![CDATA[Revista de Ciencias Médicas de Pinar del Río]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Ciencias Médicas]]></abbrev-journal-title>
<issn>1561-3194</issn>
<publisher>
<publisher-name><![CDATA[Editorial Ciencias Médicas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1561-31942021000600017</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Tercer ventriculostomía endoscópica en hidrocefalia secundaria a tumores de fosa posterior en adultos]]></article-title>
<article-title xml:lang="en"><![CDATA[Endoscopic third ventriculostomy in hydrocephalus secondary to posterior fossa tumors in adults]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Horta-Tamayo]]></surname>
<given-names><![CDATA[Ernesto Enrique]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Acosta-González]]></surname>
<given-names><![CDATA[Luis Cesar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ortega-Raez]]></surname>
<given-names><![CDATA[Diana Rosa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez-Santillán]]></surname>
<given-names><![CDATA[Lary Benice]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Ciencias Médicas de Holguín Hospital Clínico-Quirúrgico Lucía Iñiguez Landín. Servicio de Neurocirugía ]]></institution>
<addr-line><![CDATA[Holguín ]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<volume>25</volume>
<numero>6</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S1561-31942021000600017&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S1561-31942021000600017&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S1561-31942021000600017&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción: los tumores de fosa posterior frecuentemente causan hidrocefalia obstructiva. Existen varios esquemas terapéuticos para manejar esta enfermedad, que persiguen la resolución de la hipertensión intracraneal. La fenestración de piso del tercer ventrículo es una opción rápida, resolutiva y con pocas complicaciones posoperatorias.  Objetivo:  caracterizar los resultados quirúrgicos de pacientes intervenidos por hidrocefalia obstructiva secundaria a tumores de la fosa posterior mediante fenestración endoscópica del tercer ventrículo.  Métodos: se realizó un estudio observacional, descriptivo, transversal, de serie de casos. Se realizó un muestreo intencional por criterios de inclusión, con una muestra de seis pacientes.  Resultados:  el tiempo transcurrido entre el diagnóstico y la realización de la fenestración fue de 24 horas. Todos mostraron una escala de Glasgow igual o superior a 13 puntos. Se observó un grado 6 de la escala de Frisen en solo un caso. En las imágenes de TAC diagnósticas, el diámetro del tercer ventrículo promedió 14 mm. El índice de Evans máximo fue de 0,40. El tiempo máximo transcurrido entre el diagnóstico de hidrocefalia y la realización de la derivación fue de 48 horas. El tiempo quirúrgico promedio fue de 32 minutos. Entre la primera cirugía y la resección tumoral transcurrieron 99 horas como promedio. En los seis meses posteriores, ningún paciente presentó hidrocefalia.  Conclusiones: la fenestración endoscópica del tercer ventrículo es una técnica segura en el tratamiento de la hidrocefalia por tumores de fosa posterior. Se observa baja frecuencia de fistula posoperatoria cuando se realiza previo a la cirugía.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction:  posterior fossa tumors frequently cause obstructive hydrocephalus. There are several therapeutic schemes to manage this entity, which pursue the resolution of intracranial hypertension. Third ventricle floor fenestration is a fast and a resolution option having few postoperative complications.  Objective:  to characterize the surgical results of patients undergoing surgeries for obstructive hydrocephalus secondary to posterior fossa tumors by endoscopic fenestration of the third ventricle.  Methods: an observational, descriptive, cross-sectional, case series study was carried out with an intentional sampling which considered the inclusion criteria, obtaining a sample of 6 patients.  Results:  the time elapsed between diagnosis and fenestration was 24 hours. All of them showed a Glasgow scale equal to or higher than 13 points. A grade 6 on the Frisen scale was observed in only one case. On diagnostic CT images, the diameter of the third ventricle averaged 14 mm. The maximum Evans index was 0.40. The maximum time elapsed between the diagnosis of hydrocephalus and the performance of the shunt was 48 hours. The average surgical time was 32 minutes. An average of 99 hours elapsed between the first surgery and tumor resection. In the following six months, no patient presented hydrocephalus.  Conclusions:  endoscopic fenestration of the third ventricle is a safe technique in the treatment of hydrocephalus due to posterior fossa tumors. Low frequency of postoperative fistula is observed when performed prior to surgery.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[TERCER VENTRICULOSTOMÍA ENDOSCÓPICA]]></kwd>
<kwd lng="es"><![CDATA[HIDROCEFALIA]]></kwd>
<kwd lng="es"><![CDATA[TUMOR]]></kwd>
<kwd lng="es"><![CDATA[FOSA POSTERIOR]]></kwd>
<kwd lng="en"><![CDATA[VENTRICULOSTOMY]]></kwd>
<kwd lng="en"><![CDATA[HYDROCEPHALUS]]></kwd>
<kwd lng="en"><![CDATA[TUMORS]]></kwd>
<kwd lng="en"><![CDATA[CRANIAL FOSSA, POSTERIOR]]></kwd>
</kwd-group>
</article-meta>
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