<?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>S2444-64832019000600382</article-id>
<article-id pub-id-type="doi">10.24875/end.m19000130</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Eficacia de las prótesis metálicas autoexpandibles en pacientes con estenosis del aparato digestivo de etiología maligna]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mendoza-Ramírez]]></surname>
<given-names><![CDATA[Jonatán]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Angulo-Molina]]></surname>
<given-names><![CDATA[Diego]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Farca-Belsaguy]]></surname>
<given-names><![CDATA[Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Keil-Ríos]]></surname>
<given-names><![CDATA[Daniel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro Médico ABC Unidad de Endoscopia Avanzada ]]></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>382</fpage>
<lpage>388</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2444-64832019000600382&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2444-64832019000600382&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2444-64832019000600382&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción: Las prótesis gastrointestinales son accesorios que se emplean para mantener o restaurar la permeabilidad tracto digestivo. Cada vez se emplean con más frecuencia y por lo tanto, realizamos un estudio para evaluar la eficacia de las prótesis metálicas autoexpandibes (PMAE).  Objetivo: Evaluar la eficacia de las PMAE en pacientes con estenosis del aparato digestivo de etiología maligna atendidos en el Centro Médico ABC.  Material y métodos: Se realizó un estudio descriptivo, transversal y retrospectivo, de enero 2016 a marzo de 2019. Se incluyeron pacientes atendidos en la institución, con diagnóstico de estenosis maligna confirmada histológicamente y a los que se les haya colocado una PMAE. Se recabaron datos clínicos, complicaciones y sobrevida.  Resultados: Se analizaron 40 casos de pacientes a los cuales se les realizaron 49 procedimientos de colocación de PMAE. El promedio de edad fue de 65.1 años (DE ± 12.1), con un predominio del sexo masculino (60%). El cáncer de páncreas fue la patología oncológica con mayor diagnóstico (37.5%), seguido del cáncer de esófago y estómago con 12.5% cada uno. Las PMAE más empleadas de forma global fueron las no cubiertas (85%). Las PMAE colocadas en esófago y píloro y duodeno resolvieron la sintomatología en todos los casos (éxito técnico y clínico 100%). En el caso de prótesis enterales y colónicas, se alcanzó un éxito técnico de 66% y clínico de 50% para cada grupo. Él éxito técnico fue de 90% y 80% de éxito clínico para las PAEM de localización biliar. Las complicaciones documentadas fueron: hemorragia (1/49, 2%), disfunción (3/49, 6%), sobrecrecimiento tumoral (4/49, 8%), perforación (1/49, 2%), migración (1/49, 2%) y pancreatitis (1/49, 2%). El promedio de sobrevida a partir de la colocación de la PMAE, fue de 60.5 (DE ± 34) días para PMAE esofágicas, 111 (DE ± 63.4) días en prótesis pilóricas y duodenales, 103 (DE ± 98) días en prótesis enterales, 187 (DE ± 68.5) días en casos con colocación de PMAE colónicas y de 151 (DE ± 177) días para prótesis localizadas en vía biliar.  Conclusión: La colocación de PMAE fueron efectivas para paliación de síntomas en pacientes con estenosis de etiología maligna a nivel de esófago, píloro y duodeno y biliar. La menor tasa de éxito técnico y clínico en las estenosis enterales y colónicas probablemente se relacione a la baja frecuencia en la colocación de prótesis metálicas autoexpandibles en dichas localizaciones.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background: Gastrointestinal stents are used to maintain or restore the digestive tract permeability. They are being used more frequently and therefore; we performed a study to evaluate the effectiveness of self-expanding metal stents (SEMS).  Objective: To evaluate the effectiveness of SEMS in patients with malignant stenosis of the gastrointestinal tract treated at the ABC Medical Center.  Material and methods: A descriptive, cross-sectional and retrospective study was conducted from January 2016 to March 2019. Patients treated in the hospital, with malignant stenosis histologically confirmed and SEMS were included. Clinical data, complications and survival were collected.  Results: We analyzed 40 cases of patients who underwent 49 SEMS placement procedures. The average age was 65.1 years (SD ± 12.1), with a predominance of males (60%). Pancreatic cancer was the oncological pathology with the highest diagnosis (37.5%), followed by cancer of the esophagus and stomach with 12.5% each one. SEMS uncovered was the most used (85%). SEMS placed in esophagus and pylorus and duodenum resolved symptoms in all cases (technical and clinical success 100%). Enteral and colonic SEMS, a technical success of 66% and clinical success of 50% was achieved for each group. In biliary SEMS, the technical and clinical success was 90% and 80% respectively. Complications were: hemorrhage (1/49, 2%), dysfunction (3/49, 6%), tumor overgrowth (4/49, 8%), perforation (1/49, 2%), migration (1/49, 2%) and pancreatitis (1/49, 2%). The average survival was 60.5 (SD ± 34) days for esophageal SEMS, 111 (SD ± 63.4) days in pyloric and duodenal SEMS, 103 (SD ± 98) days in enteral SEMS, 187 (SD ± 68.5) days in cases with colonic SEMS and 151 (SD ± 177) days for SEMS located in the bile duct.  Conclusion: The placement of PMAE were effective for palliation of symptoms in patients with stenosis of malignant etiology in esophagus, pylorus, duodenum and bile duct. The lower rate of technical and clinical success in enteral and colonic stenosis is probably related to the low frequency in the placement of self-expanding metal stents in these sites.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Prótesis metálicas auto expandibles (PMAE)]]></kwd>
<kwd lng="es"><![CDATA[Estenosis malignas]]></kwd>
<kwd lng="es"><![CDATA[Eficacia]]></kwd>
<kwd lng="en"><![CDATA[Self-expandable metal stents (SEMS)]]></kwd>
<kwd lng="en"><![CDATA[Malignant strictures]]></kwd>
<kwd lng="en"><![CDATA[Effectiveness]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kochar]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Shah]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Enteral stents:from esophagus to colon]]></article-title>
<source><![CDATA[Gastrointest Endosc]]></source>
<year>2013</year>
<volume>78</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>913-8</page-range></nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Verschuur]]></surname>
<given-names><![CDATA[EM]]></given-names>
</name>
<name>
<surname><![CDATA[Homs]]></surname>
<given-names><![CDATA[MY]]></given-names>
</name>
<name>
<surname><![CDATA[Steyerberg]]></surname>
<given-names><![CDATA[EW]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A new esophageal stent design (Niti-S stent) for the prevention of migration:a prospective study in 42 patients]]></article-title>
<source><![CDATA[Gastrointest. Endosc.]]></source>
<year>2006</year>
<volume>63</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>134-40</page-range></nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Choi]]></surname>
<given-names><![CDATA[SJ]]></given-names>
</name>
<name>
<surname><![CDATA[Kim]]></surname>
<given-names><![CDATA[JH]]></given-names>
</name>
<name>
<surname><![CDATA[Choi]]></surname>
<given-names><![CDATA[JW]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Fully covered, retrievable self-expanding metal stents (Niti-S) in palliation of malignant dysphagia:Long-term results of a prospective study]]></article-title>
<source><![CDATA[Scand Jour Gastroent]]></source>
<year>2011</year>
<volume>46</volume>
<page-range>875-80</page-range></nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[García Cano]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Sánchez Manjavacas]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Viñuelas Chicano]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Tratamiento paliativo de la obstrucción tumoral del vaciamiento gástrico con prótesis metálicas autoexpandibles insertadas endoscópicamente]]></article-title>
<source><![CDATA[Rev. Esp. Enferm. Dig]]></source>
<year>2008</year>
<volume>100</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>320-6</page-range></nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Alonso Larraga]]></surname>
<given-names><![CDATA[JO]]></given-names>
</name>
<name>
<surname><![CDATA[Álvaro Villegas]]></surname>
<given-names><![CDATA[JC]]></given-names>
</name>
<name>
<surname><![CDATA[Sobrino Cossio]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Self-expanding metal stents versus antrectomy for the palliative treatment of obstructive adenocarcinoma of the gastric antrum]]></article-title>
<source><![CDATA[Rev. Esp. Enferm. Dig]]></source>
<year>2012</year>
<volume>104</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>185-9</page-range></nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Waidmann]]></surname>
<given-names><![CDATA[O]]></given-names>
</name>
<name>
<surname><![CDATA[Trojan]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Friedrich Rust]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[SEMS vs cSEMS in duodenal and small bowel obstruction:High risk of migration in the covered stent group]]></article-title>
<source><![CDATA[World J Gastroenterol]]></source>
<year>2013</year>
<volume>19</volume>
<numero>37</numero>
<issue>37</issue>
<page-range>6199-206</page-range></nlm-citation>
</ref>
<ref id="B7">
<label>7</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[van Hooft]]></surname>
<given-names><![CDATA[JE]]></given-names>
</name>
<name>
<surname><![CDATA[van Halsema]]></surname>
<given-names><![CDATA[EE]]></given-names>
</name>
<name>
<surname><![CDATA[Vanbiervliet]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Self-expandable metal stents for obstructing colonic and extracolonic cancer:European society of gastrointestinal endoscopy [ESGE] clinical guideline]]></article-title>
<source><![CDATA[Endoscopy]]></source>
<year>2014</year>
<volume>46</volume>
<page-range>990-1002</page-range></nlm-citation>
</ref>
<ref id="B8">
<label>8</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Nitta]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Kataoka]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Ohta]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Clinical outcomes of self-expandable metal stent (SEMS) placement as palliative treatment for malignant colorectal obstruction:A single-center study from Japan]]></article-title>
<source><![CDATA[Ann Med Surg]]></source>
<year>2017</year>
<volume>19</volume>
<page-range>33-6</page-range></nlm-citation>
</ref>
<ref id="B9">
<label>9</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dabizzi]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Arcidiacono]]></surname>
<given-names><![CDATA[PG]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Update on enteral stents]]></article-title>
<source><![CDATA[Curr Treat Options Gastro]]></source>
<year>2016</year>
</nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Nam]]></surname>
<given-names><![CDATA[HS]]></given-names>
</name>
<name>
<surname><![CDATA[Kang]]></surname>
<given-names><![CDATA[DH]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Current status of biliary metal stents]]></article-title>
<source><![CDATA[Clin Endosc]]></source>
<year>2016</year>
<volume>49</volume>
<page-range>124-30</page-range></nlm-citation>
</ref>
<ref id="B11">
<label>11</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Almadi]]></surname>
<given-names><![CDATA[MA]]></given-names>
</name>
<name>
<surname><![CDATA[Barkun]]></surname>
<given-names><![CDATA[AN]]></given-names>
</name>
<name>
<surname><![CDATA[Martel]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[No benefit of covered vs uncovered self-expandable metal stents in patients with malignant distal biliary obstruction:a meta-analysis]]></article-title>
<source><![CDATA[Clin Gastroenterol Hepatol]]></source>
<year>2013</year>
<volume>11</volume>
<page-range>27-37</page-range></nlm-citation>
</ref>
<ref id="B12">
<label>12</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Naitoh]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Hayashi]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Nakazawa]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Side-by-side versus stent-in-stent deployment in bilateral endoscopic metal stenting for malignant hilar biliary obstruction]]></article-title>
<source><![CDATA[Dig Dis Sci]]></source>
<year>2012</year>
<volume>57</volume>
<page-range>3279-85</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
