<?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>2444-6483</journal-id>
<journal-title><![CDATA[Endoscopia]]></journal-title>
<abbrev-journal-title><![CDATA[Endoscopia]]></abbrev-journal-title>
<issn>2444-6483</issn>
<publisher>
<publisher-name><![CDATA[Asociación Mexicana de Endoscopia Gastrointestinal A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2444-64832019000600233</article-id>
<article-id pub-id-type="doi">10.24875/end.m19000102</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Factores de riesgo y tratamiento endoscópico para estenosis de anastomosis posterior a resección en pacientes con cáncer colorectal]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Picazo-Ferrera]]></surname>
<given-names><![CDATA[Katia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Jaurrieta-Rico]]></surname>
<given-names><![CDATA[César]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Manzano-Robleda]]></surname>
<given-names><![CDATA[María Del Carmen]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sánchez-Del Monte]]></surname>
<given-names><![CDATA[Julio Conrado]]></given-names>
</name>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alonso-Lárraga]]></surname>
<given-names><![CDATA[Juan Octavio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mora-Levy]]></surname>
<given-names><![CDATA[José Guillermo De la]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-Guerrero]]></surname>
<given-names><![CDATA[Angélica I.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramírez-Solis]]></surname>
<given-names><![CDATA[Mauro Eduardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Secretaria de Salud Instituto Nacional de Cancerología Endoscopia Gastrointestinal]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2019</year>
</pub-date>
<volume>31</volume>
<fpage>233</fpage>
<lpage>239</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2444-64832019000600233&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2444-64832019000600233&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2444-64832019000600233&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Las estenosis benignas son complicaciones frecuentes posterior a la cirugía colorectal con una incidencia hasta del 20%. Actualmente ha disminuido la tasa de resecciones abdominoperineales y por lo tanto, los estomas permanentes; aumentando la tasa de resecciones interesfintéricas. Sin embargo, se ha observado un incremento en el riesgo de estenosis asociado a las anastomosis proximales al margen anal. Actualmente se sabe que el tratamiento endoscópico de las estenosis de anastomosis localizadas en la cavidad peritoneal es seguro y efectivo; en la actualidad no hay evidencia suficiente para establecer el manejo de las estenosis en el canal anal debido a las diferencias anatómicas que presenta. El objetivo de este estudio es determinar los factores de riesgo asociados al desarrollo de estenosis de anastomosis colorectales en pacientes con cáncer y describir el tratamiento endoscópico en estos pacientes.  Metodología: Diseño del estudio retrospectivo, longitudinal, realizado en un solo centro, que incluye los datos obtenidos de expedientes clínicos de pacientes con diagnóstico de cáncer colorectal sometidos a resección quirúrgica y anastomosis que fueron valorados por colonoscopia entre el 2014 y 2019. Se excluyeron pacientes sometidos a procedimiento de Hartmann, resección abdominoperineal o a los que se les realizó estoma permanente por alguna otra causa.  Resultados: Se incluyeron los datos de 213, 39 (18.3%) presentaron estenosis de la anastomosis. El desarrollo de estenosis se asoció con al tipo de cirugía, siendo la resección interesfintérica la de mayor riesgo (RIE) OR = 18.81 (IC95% 3.31 - 189.40, p&lt;0.001). La presencia de estoma fue del 24.1% en los pacientes sin estenosis y 69.2% en los pacientes con estenosis; la presencia de estoma se identificó como un factor de riesgo independiente para estenosis con un OR = 7.07 (3.10 - 16.57, p&lt;0.001). Se realizó la anastomosis de forma mecánica en el 87.4% de los pacientes sin estenosis y en el 74.4% de los pacientes con estenosis, identificado como factor protector con un OR = 0.41 (IC 0.16 - 1.1, p=0.04). El 69.2% requirieron tratamiento endoscópico; de estos el 51% se dilataron con balón hidrostático, el 22.2% con cortes radiados, 18.5% de los pacientes se dilató con el endoscopio y 7.4% recibió terapia dual con cortes radiados y dilatación con balón. En promedio requirieron 1.57 (mínima 1 y máxima 4) sesiones endoscópicas. Se observaron resultados favorables en el 83.3% y recurrencia en el 2.6% únicamente. No se reportaron complicaciones asociadas al procedimiento. En conclusión el desarrollo de estenosis en anastomosis colorectales en pacientes con cáncer fue mayor en pacientes con resección interesfintérica la presencia de un estoma protector es un factor de riesgo independiente para estenosis y la conformación mecánica de la anastomosis se mostró con un factor protector contra el desarrollo de estenosis. El tratamiento endoscópico de las anastomosis colorectales es una opción segura y efectiva previo a la restitución del tránsito intestinal en estos pacientes.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Anastomotic stricture following colorectal cancer surgery is not a rare complication, but proper management of anastomotic stricture located close to the anal verge is uncertain. This study aimed to investigate risk factors and management strategies for anastomotic stricture after colorectal resections in oncological patients.  Methods: We performed a retrospective, longitudinal study which includes data obtained from a database of patients in endoscopic surveillance of colorectal cancer who underwent surgery and anastomosis between January 2014 and January 2019. Clinical outcomes and risk factors for anastomotic stricture were investigated.  Results: Among 213 patients included, 39 (18.3%) were diagnosed having anastomotic stricture. The analysis revealed that intersphincteric resection (odds ratio [OR] = 18.81; confidence interval 95% (CI 3.31 - 189.40, p&lt;0.001) and diverting stoma OR = 7.07 95% (CI 3.10 - 16.57, p&lt;0.001) were independent risk factors of anastomotic stricture. Anastomostic stapler use was found as a protective factor against stricture OR = 0.41 (CI 0.16 - 1.1, p=0.04). Twenty seven patients (69.2%) were treated by endoscopic procedures, 51% underwent baloon dilation, 22.2% incisional therapy, 18.5% were dilated with the scope and 7.4% underwent both baloon dilation and incisional therapy. Average sessions needed was 1.57 (minimum 1 y maximum 4), 83.3% resolved and 2.6% presented stricture recurrence. No complications were reported after endoscopic treatment. In conclusion, patients treated with intersphincteric resection and the presence of a diverting stoma are risk factors for anastomotic stricture after surgery. Anastomotic stapler use was found as a protective factor against stricture development. Therapeutic endoscopic options for colorectal anastomotic strictures are effective and safe, but clinicians should carefully select a conservative dilation method because actually there is no consensus about the gold standard treatment method.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Cáncer colorectal]]></kwd>
<kwd lng="es"><![CDATA[Anastomosis]]></kwd>
<kwd lng="es"><![CDATA[Estenosis]]></kwd>
<kwd lng="es"><![CDATA[Estoma]]></kwd>
<kwd lng="en"><![CDATA[Colorectal cancer]]></kwd>
<kwd lng="en"><![CDATA[Anastomosis]]></kwd>
<kwd lng="en"><![CDATA[Stricture]]></kwd>
<kwd lng="en"><![CDATA[Stoma]]></kwd>
</kwd-group>
</article-meta>
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