Clinical Endoscopy

Gastroduodenal intussusception secondary to gastric gastrointestinal stromal tumor: Kanokchai Supasaringkarn, Tanyaporn Chantarojanasiri, Sathienrapong Chantawibul, Nutpacha Chotikawichean; Received September 15, 2025 Accepted November 28, 2025 Published online May 6, 2026; DOI: https://doi.org/10.5946/ce.2025.349 [Epub ahead of print]

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Current status of gastrointestinal endoscopy in Thailand: Tanyaporn Chantarojanasiri, Wiriyaporn Ridtitid, Nonthalee Pausawasdi; Received July 13, 2025 Accepted October 26, 2025 Published online December 19, 2025; DOI: https://doi.org/10.5946/ce.2025.230 [Epub ahead of print]

Abstract PDF: The Thai Association for Gastrointestinal Endoscopy (TAGE) has played a pivotal role in advancing gastrointestinal (GI) endoscopy in Thailand through its strategic focus on clinical services, education, and research. Since its establishment in 2005, TAGE has united gastroenterologists and surgeons, helping standardize endoscopic practices across the country. Through national training programs, clinical guideline development, hands-on workshops, and international collaborations, TAGE has elevated the quality and accessibility of endoscopic care. Despite challenges such as workforce shortages and the uneven distribution of services, particularly in rural areas, TAGE continues to address these gaps through outreach training, model development, and regional research initiatives. Society leadership in cholangiocarcinoma management, advanced endoscopy, and educational model innovation reflects its commitment to improving outcomes and establishing Thailand as a regional hub for GI endoscopy.

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Fabrication and mechanical testing of polydioxanone hook cross biodegradable self-expandable enteric stent: impact of fabrication density and mechanical properties of the stent: Tanyaporn Chantarojanasiri, Juthamas Ratanavaraporn, Saran Keeratihattayakorn; Clin Endosc 2025;58(4):586-594. Published online April 28, 2025; DOI: https://doi.org/10.5946/ce.2024.252

Graphical Abstract Abstract PDF: Background
/Aims: The mechanical properties of biodegradable stent when fabricated using different number of pins per row of fabrication has been limited. We compared the radial compressive force of polydioxanone (PDO) stent that was fabricated in hook and cross manner, using 13, 17 and 19 pins per row and measure the radial compressive force and ex vivo deployment.
Methods
The PDO stents fabricated by the in-house aluminum mandrel were tested for radial force using plate compression until the stent achieved 50% strain. The relationship between compression force and %strain was calculated. Ex vivo testing of stent expansion against short segment stricture was performed in a pig small intestine compared between PDO hook cross PDO stent and braided metallic stent.
Results
The stent shortening of 16.40%, 31.20% and 19.24% was observed in 13-, 17- and 19-pin-per-row, respectively. The maximum force to achieve 50% strain were 0.503, 1.168 and 1.008 N for 13, 17 and 19 pins per row, respectively. The stent fabricated using hook and cross pattern demonstrated higher conformability to anatomical stricture when compared with braided stent.
Conclusions
PDO stent fabricated using 17 pins per row demonstrated highest radial force when compared with 13 and 19 pins per row.

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Biliary drainage in pancreatic cancer with duodenal invasion: which route is the best?: Tanyaporn Chantarojanasiri, Thawee Ratanachu-Ek; Clin Endosc 2025;58(1):82-84. Published online January 24, 2025; DOI: https://doi.org/10.5946/ce.2024.301

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What You Need to Know Before Performing Endoscopic Ultrasound-guided Hepaticogastrostomy: Tanyaporn Chantarojanasiri, Thawee Ratanachu-Ek, Nonthalee Pausawasdi; Clin Endosc 2021;54(3):301-308. Published online May 28, 2021; DOI: https://doi.org/10.5946/ce.2021.103

Abstract PDF

Endoscopic retrograde cholangiopancreatography (ERCP) is the primary treatment modality for bile duct obstruction. When ERCP is unsuccessful, percutaneous transhepatic biliary drainage can be an alternative method. Endoscopic ultrasound-guided biliary drainage (EUS-BD) has emerged as a treatment option for biliary obstruction, especially after ERCP failure. EUS-BD offers transluminal intrahepatic and extrahepatic drainage through a transgastric and transduodenal approach. EUS-guided hepaticogastrostomy (EUS-HGS) is an excellent choice for patients with hilar strictures or those with a surgically altered anatomy. The optimal steps in EUS-HGS are case selection, bile duct visualization, puncture-site selection, wire insertion and manipulation, tract dilation, and stent placement. Caution should be taken at each step to prevent complications. Dedicated devices for EUS-HGS have been developed to improve the technical success rate and reduce complications. This technical review focuses on the essential practical points at each step of EUS-HGS.

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Bridging the Gap between Literature and Practice: Nationwide Outcomes of Endoscopic Ultrasound-guided Hepatico-gastrostomy
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Endoscopy International Open.2026;[Epub] CrossRef
Quality Indicators for EUS
Girish Mishra, Anne Marie Lennon, Nonthalee Pausawasdi, Vanessa M. Shami, Reem Z. Sharaiha, B. Joseph Elmunzer
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Shin Kato, Mariko Tsukamoto, Taichi Murai, Yuta Koike
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Transbulbäre und transgastrale Gallengangsdrainage
Philipp Thies, Markus Dollhopf
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A Possible Contraindication for Endoscopic Ultrasound-Guided Hepaticogastrostomy: A Giant Hiatal Hernia
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Endoscopic ultrasound-guided intervention for inaccessible papilla in advanced malignant hilar biliary obstruction
Partha Pal, Sundeep Lakhtakia
Clinical Endoscopy.2023; 56(2): 143. CrossRef
Liver impaction technique improves technical success rate of guidewire insertion during EUS-guided hepaticogastrostomy (with video)
Junichi Nakamura, Takeshi Ogura, Saori Ueno, Atsushi Okuda, Nobu Nishioka, Yuki Uba, Mitsuki Tomita, Kimi Bessho, Nobuhiro Hattori, Hiroki Nishikawa
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Practical Tips for Safe and Successful Endoscopic Ultrasound-Guided Hepaticogastrostomy: A State-of-the-Art Technical Review
Saburo Matsubara, Keito Nakagawa, Kentaro Suda, Takeshi Otsuka, Masashi Oka, Sumiko Nagoshi
Journal of Clinical Medicine.2022; 11(6): 1591. CrossRef
Prevention of Serious Complications during Endoscopic Ultrasound-Guided Biliary Drainage: A Case-Based Technical Review
Surinder Singh Rana, Jimil Shah, Harish Bhujade, Ujjwal Gorsi, Mandeep Kang, Rajesh Gupta
Journal of Digestive Endoscopy.2022; 13(02): 082. CrossRef

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Endoscopic Ultrasound-Guided Vascular Therapy for Portoduodenal Fistula: Tanyaporn Chantarojanasiri, Apichet Sirinawasatien, Chalermrat Bunchorntavakul, Aroon Siripun, Sa-ard Treepongkaruna, Thawee Ratanachu-ek; Clin Endosc 2020;53(6):750-753. Published online February 13, 2020; DOI: https://doi.org/10.5946/ce.2019.167

Abstract PDF

Portoenteric fistula is a rare cause of massive upper gastrointestinal bleeding. Most cases can be treated with radiointervention or surgery, but portoenteric fistula is associated with a high mortality. We reported a case of intermittent massive upper gastrointestinal bleeding in a 33-year-old man with cholangiocarcinoma who underwent surgical resection followed by chemoradiation. A portoduodenal fistula due to chronic duodenal ulceration was identified. The bleeding was successfully controlled by endoscopic ultrasound-guided coil placement through the duodenal bulb using the anchoring technique. Follow-up endoscopy and computed tomography scan showed multiple coil placements between a part of the portal vein and the duodenal bulb without any evidence of portal vein thrombosis. There were no complications, and bleeding did not recur during the 8-month follow-up period.

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Management of Portal Vein Thrombosis and Porto-enteric Fistula Following Whipple Procedure: A Multimodal Interventional Approach
Kausthubh Hegde, Patrick D. Sutphin, Carlos Fernandez-Del-Castillo, Alexis M. Cahalane
Journal of Clinical Interventional Radiology ISVIR.2026;[Epub] CrossRef
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E Dubois, R Geelen
Acta Gastro Enterologica Belgica.2024; 87(3): 430. CrossRef
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The Japanese Journal of Gastroenterological Surgery.2022; 55(2): 99. CrossRef
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Clinical Endoscopy.2022; 55(3): 458. CrossRef

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Successful Closure of a Benign Refractory Tracheoesophageal Fistula Using an Over-the-Scope Clip after Failed Esophageal Stent Placement and Surgical Management: Nonthalee Pausawasdi, Chotirot Angkurawaranon, Tanyaporn Chantarojanasiri, Arunchai Chang, Wanchai Wongkornrat, Somchai Leelakusolvong, Asada Methasate; Clin Endosc 2020;53(3):361-365. Published online October 28, 2019; DOI: https://doi.org/10.5946/ce.2019.106

Abstract PDF Supplementary Material

Tracheoesophageal fistulas (TEFs) have traditionally been managed surgically, but the endoscopic approach is widely performed as a less invasive alternative. Different closure techniques have been proposed with inconsistent results. An over-the-scope clip (OTSC) appears to be a reasonable option, but long-term results have not been well defined. We report the long-term outcomes of a complex case of successful closure of a benign refractory TEF using an OTSC after failed surgical management and esophageal stent placement.

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Gastroenterology Research and Practice.2021; 2021: 1. CrossRef

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