<?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>S2444-64832021000500052</article-id>
<article-id pub-id-type="doi">10.24875/end.m21000345</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Tratamiento de estenosis biliares complejas]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Soto-Solís]]></surname>
<given-names><![CDATA[Rodrigo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto de Seguridad y Servicios Sociales de los Trabajadores del Estado Centro Médico Nacional 20 de Noviembre ]]></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>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<volume>33</volume>
<fpage>52</fpage>
<lpage>54</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2444-64832021000500052&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2444-64832021000500052&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2444-64832021000500052&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Sin duda los avances tecnológicos son uno de los grandes pilares de la medicina moderna. En esta segunda versión virtual de los Ecos Endoscópicos vemos un futuro esperanzador, en el que haremos reuniones que combinen la educación a distancia y la reunión presencial se están volviendo una realidad. Esta es una revisión analítica de las sesiones y los trabajos libres presentados en la Digestive Disease Week 2021 (DDW 2021) en donde se evaluó el tratamiento endoscópico de las estenosis biliares complejas.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Radiofrecuencia biliar]]></kwd>
<kwd lng="es"><![CDATA[Colangiopancreatografía retrógrada endoscópica (CPRE)]]></kwd>
<kwd lng="es"><![CDATA[Estenosis biliar hiliar]]></kwd>
<kwd lng="es"><![CDATA[Prótesis biliares metálicas]]></kwd>
<kwd lng="es"><![CDATA[Prótesis biliares plásticas]]></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[Dhaliwal]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Saghir]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Daryl]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Naga]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Dhindsa]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Ofosu]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Endoscopic balloon dilation vs. endoscopic balloon dilation with stenting for dominant strictures in primary sclerosing cholangitis:A comparative meta-analysis]]></article-title>
<source><![CDATA[Presentación oral (390131), DDW]]></source>
<year>2021</year>
</nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Beran]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Ghazaleh]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Al-abboodhi]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Mhanna]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Ayesh]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Srour]]></surname>
<given-names><![CDATA[O]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Balloon dilation vs. stent placing for dominant strictures in primary sclerosing cholangitis:A systematic review and meta-analysis]]></article-title>
<source><![CDATA[DDW]]></source>
<year>2021</year>
</nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bailey]]></surname>
<given-names><![CDATA[NJ]]></given-names>
</name>
<name>
<surname><![CDATA[Topazian Martin]]></surname>
<given-names><![CDATA[JA]]></given-names>
</name>
<name>
<surname><![CDATA[Storm]]></surname>
<given-names><![CDATA[AC]]></given-names>
</name>
<name>
<surname><![CDATA[Abu Dayyeh]]></surname>
<given-names><![CDATA[BK]]></given-names>
</name>
<name>
<surname><![CDATA[Levy]]></surname>
<given-names><![CDATA[MJ]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[ID:3525682 In a Pinch:Use of small caliber dilating balloons during ERCP for salvage treatment of high-grade biliary and pancreatic duct strictures]]></article-title>
<source><![CDATA[Gastrointest Endosc]]></source>
<year>2021</year>
<volume>93</volume>
<numero>6 Suppl</numero>
<issue>6 Suppl</issue>
<page-range>AB137</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[Jonica]]></surname>
<given-names><![CDATA[ER]]></given-names>
</name>
<name>
<surname><![CDATA[Han]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Shah]]></surname>
<given-names><![CDATA[RJ]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[ID:3520602 Endoscopic vs. percutaneous management of post-transplant biliary strictures in primary sclerosing cholangitis patients]]></article-title>
<source><![CDATA[Gastrointest Endosc]]></source>
<year>2021</year>
<volume>93</volume>
<numero>6 Suppl</numero>
<issue>6 Suppl</issue>
<page-range>AB127-8</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[Hajifathalian]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Skaf]]></surname>
<given-names><![CDATA[DA]]></given-names>
</name>
<name>
<surname><![CDATA[Katz]]></surname>
<given-names><![CDATA[PO]]></given-names>
</name>
<name>
<surname><![CDATA[Samstein]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Brown]]></surname>
<given-names><![CDATA[RS]]></given-names>
</name>
<name>
<surname><![CDATA[Fortune]]></surname>
<given-names><![CDATA[BE]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Treatment of biliary anastomotic stricture after liver transplantation:is metal better than plastic?ePoster, Fr417]]></article-title>
<source><![CDATA[DDW]]></source>
<year>2021</year>
</nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Emelogu]]></surname>
<given-names><![CDATA[IK]]></given-names>
</name>
<name>
<surname><![CDATA[Kumar]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Yu]]></surname>
<given-names><![CDATA[AC]]></given-names>
</name>
<name>
<surname><![CDATA[Coronel]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Coronel]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Ge]]></surname>
<given-names><![CDATA[PS]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[ID:3523951 Metal biliary stents for biliary obstruction in cholangiocarcinoma]]></article-title>
<source><![CDATA[Gastrointest Endosc]]></source>
<year>2021</year>
<volume>93</volume>
<numero>6 Suppl</numero>
<issue>6 Suppl</issue>
<page-range>AB126-7</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[Ghazaleh]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Beran]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Abulhelwa]]></surname>
<given-names><![CDATA[Z]]></given-names>
</name>
<name>
<surname><![CDATA[Aziz]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Elzanaty]]></surname>
<given-names><![CDATA[AM]]></given-names>
</name>
<name>
<surname><![CDATA[Sharma]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[ID:3520437 Bilateral vs. unilateral stenting for unresectable malignant hiliar biliary obstruction - A systematic review and meta-analysis]]></article-title>
<source><![CDATA[Gastrointest Endosc]]></source>
<year>2021</year>
<volume>93</volume>
<numero>6 Suppl</numero>
<issue>6 Suppl</issue>
<page-range>AB123</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[Ogura]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Yamada]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Ueno]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Yamada]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Okuda]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Nishioka]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Su1516 Single-session multiple stent deployment using a novel stent without dilating initial stent mesh to treat malignant hepatic hiliar obstruction]]></article-title>
<source><![CDATA[Gastrointest Endosc]]></source>
<year>2021</year>
<volume>93</volume>
<numero>6 Suppl</numero>
<issue>6 Suppl</issue>
<page-range>AB360</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[Chalikonda]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Mitsuhashi]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Bashir]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Holmes]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Chiang]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Schlachterman]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[ID:3526477 Bilateral biliary drainage for malignant hiliar obstruction using side-by-side uncovered metal stents:Patients demographics and predictors of clinical outcomes]]></article-title>
<source><![CDATA[Gastrointest Endosc]]></source>
<year>2021</year>
<volume>93</volume>
<numero>6 Suppl</numero>
<issue>6 Suppl</issue>
<page-range>AB124</page-range></nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="">
<source><![CDATA[Biliary stenting for hiliar malignant biliary obstruction:Endoscopic management of bilateral uncovered metal stent occlusion and outcomes]]></source>
<year>2021</year>
</nlm-citation>
</ref>
<ref id="B11">
<label>11</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Souza]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Ribeiro]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Funari]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[De Moura]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Scatimburgo]]></surname>
<given-names><![CDATA[MV]]></given-names>
</name>
<name>
<surname><![CDATA[De Freitas Junior]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[ID:3520569 Endoscopic bilateral drainage techniques of malignant hiliar biliary obstruction:Stent-in-stent or side-by-side?A systematic review and meta-analysis]]></article-title>
<source><![CDATA[Gastrointest Endosc]]></source>
<year>2021</year>
<volume>93</volume>
<numero>6 Suppl</numero>
<issue>6 Suppl</issue>
<page-range>AB135</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[Rebhun]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Villa]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Biliary ERFA in palliation of unresectable cholangiocarcinoma:A meta-analysis on performance outcomes and safety profile]]></article-title>
<source><![CDATA[ePoster, DDW]]></source>
<year>2021</year>
</nlm-citation>
</ref>
<ref id="B13">
<label>13</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rebhun]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Villa]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Biliary endoscopic radiofrequency ablation and percutaneous radiofrequency ablation lead to improved median and mean survival in patients with unresectable cholangiocarcinoma:A meta-analysis]]></article-title>
<source><![CDATA[ePoster, DDW]]></source>
<year>2021</year>
</nlm-citation>
</ref>
<ref id="B14">
<label>14</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Nassani]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Ghoulam]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Siddiqui]]></surname>
<given-names><![CDATA[UD]]></given-names>
</name>
<name>
<surname><![CDATA[Villa]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[ID:3523646 Photodynamic therapy alone vs]]></article-title>
<source><![CDATA[photodynamic therapy combined with systemic chemotherapy for unresectable extrahepatic cholangiocarcinoma:A pooled analysis. Gastrointest Endosc [Internet]]]></source>
<year>2021</year>
<volume>93</volume>
<numero>6 Suppl</numero>
<issue>6 Suppl</issue>
<page-range>AB128</page-range></nlm-citation>
</ref>
<ref id="B15">
<label>15</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Nemakayala]]></surname>
<given-names><![CDATA[DR]]></given-names>
</name>
<name>
<surname><![CDATA[Reif]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Shah]]></surname>
<given-names><![CDATA[JN]]></given-names>
</name>
<name>
<surname><![CDATA[Evans]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Romero]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[El Chafic]]></surname>
<given-names><![CDATA[AH]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Biliary drainage patency following ERCP - placed transpapillary self - expandable metal stents vs. EUS-guided choledocoduodenostomy with lumen - apposing metal stents for malignant biliary obstruction]]></article-title>
<source><![CDATA[ePoster Su224, DDW]]></source>
<year>2021</year>
</nlm-citation>
</ref>
<ref id="B16">
<label>16</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Binda]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Anderloni]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Fugazza]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Amato]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[de Nucci]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Redaelli]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[ID:3523449 EUS-gallbladder drainage using lumen-apposing metal stent as rescue treatment for malignant distal bilary obstruction:A large multicenter experience]]></article-title>
<source><![CDATA[Gastrointest Endosc]]></source>
<year>2021</year>
<volume>93</volume>
<numero>6 Suppl</numero>
<issue>6 Suppl</issue>
<page-range>AB244-5</page-range></nlm-citation>
</ref>
<ref id="B17">
<label>17</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dorrell]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Pawa]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Safety and efficacy of endoscopic ultrasound-guided hepaticogastrostomy for management of biliary disease]]></article-title>
<source><![CDATA[ePoster, DDW]]></source>
<year>2021</year>
</nlm-citation>
</ref>
<ref id="B18">
<label>18</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Yamada]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Ogura]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Komori]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Nishioka]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Okuda]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Ueno]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Sa1418 Innovative treatment technique for hepaticojejunotomy stricture using novel fine-gauge electrocautery dilator]]></article-title>
<source><![CDATA[Gastrointest Endosc]]></source>
<year>2021</year>
<volume>91</volume>
<numero>6 Suppl</numero>
<issue>6 Suppl</issue>
<page-range>AB180-1</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
