Clinical Endoscopy

Potassium-competitive acid blocker-associated gastric mucosal lesions: Kimitoshi Kubo, Noriko Kimura, Mototsugu Kato; Clin Endosc 2024;57(4):417-423. Published online February 29, 2024; DOI: https://doi.org/10.5946/ce.2023.279

Since the introduction of vonoprazan, a potassium-competitive acid blocker (P-CAB), it has been demonstrated to reversibly inhibit gastric acid secretion by engaging in potassium-competitive ionic binding to H+/K+-ATPase. In contrast, proton pump inhibitors (PPIs) achieve H+/K+-ATPase inhibition through covalent binding to cysteine residues of the proton pump. Reported cases have indicated an emerging trend of P-CAB-related gastropathies, similar to those associated with PPIs, as well as unique gastropathies specific to P-CAB use, such as the identification of web-like mucus. Pathologically, parietal cell profusions, which show a positively correlated with hypergastrinemia, have a higher incidence in P-CAB users compared to PPI users. Thus, this review aims to summarize the endoscopic and pathological findings reported to date concerning P-CAB-related gastric mucosal lesions. Additionally, it seeks to discuss the differences between the PPIs and P-CABs in terms of the formation and frequency of associated gastropathies. This review highlights the evident differences in the mechanism of action and potency of acid inhibition between P-CABs and PPIs, notably contributing to differences in the formation and frequency of associated gastropathies. It emphasizes the necessity to distinguish between P-CAB-related and PPI-related gastropathies in the clinical setting.

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Whitish gastric mucosa on upper gastrointestinal endoscopy
Eun Jeong Gong, Chang Seok Bang
Clinical Endoscopy.2024; 57(2): 277. CrossRef
Vonoprazan-Associated Mucosal Redness: A Report of Two Cases
Masaya Iwamuro, Yoshiyasu Kono, Takehiro Tanaka, Seiji Kawano, Nobumasa Ikeda
Cureus.2024;[Epub] CrossRef

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Efficacy and Safety of Endoscopic Submucosal Dissection for Superficial Gastric Neoplasms: A Latin American Cohort Study: Fernando Palacios-Salas, Harold Benites-Goñi, Luis Marin-Calderón, Paulo Bardalez-Cruz, Jorge Vásquez-Quiroga, Edgar Alva-Alva, Bryan Medina-Morales, Jairo Asencios-Cusihuallpa; Clin Endosc 2022;55(2):248-255. Published online November 12, 2021; DOI: https://doi.org/10.5946/ce.2021.192

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Background
/Aims: Endoscopic submucosal dissection (ESD) is the preferred technique for treating early gastric cancer (EGC). However, very few studies have been conducted in South America. This study aimed to assess the efficacy and safety of ESD for EGC.
Methods
We analyzed data from a prospective cohort from 2013 to 2020. A total of 152 superficial gastric neoplasms that fulfilled the absolute or expanded criteria for ESD were included. Outcomes were en bloc, R0, and curative resection rates, incidence of adverse events, and length of procedure.
Results
The age of the enrolled patients was 68.4±11.3 years. The number of included patients based on the absolute and expanded indications was 150 and 2, respectively. En bloc, R0, and curative resections were achieved in 98.0%, 96.1%, and 89.5% of the cases, respectively. Bleeding and perforation were reported in 5.9% and 6.6% of the cases, respectively. Histopathological examination revealed lowgrade dysplasia, high-grade dysplasia, well-differentiated adenocarcinoma, and poorly differentiated adenocarcinoma in 13, 20, 117, and 2 cases, respectively.
Conclusions
Our study shows that ESD performed by properly trained endoscopists in reference centers is safe and effective, with comparable therapeutic outcomes to those reported in the Eastern series.

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Short-Term and Long-Term Outcomes of Liver Cirrhosis in Gastric Neoplasm Patients Undergoing Endoscopic Submucosal Dissection
Xu-Rui Liu, Lian-Shuo Li, Fei Liu, Zi-Wei Li, Xiao-Yu Liu, Wei Zhang, Dong Peng
Journal of Laparoendoscopic & Advanced Surgical Techniques.2023; 33(7): 640. CrossRef
Endoscopic submucosal dissection for early gastric cancer: It is time to consider the quality of its outcomes
Gwang Ha Kim
World Journal of Gastroenterology.2023; 29(43): 5800. CrossRef
Endoscopic diagnosis of early gastric cancer
Dong Chan Joo, Gwang Ha Kim
Journal of the Korean Medical Association.2022; 65(5): 267. CrossRef
Therapeutic approach to non-curative resection after endoscopic treatment in early gastric cancer
Eun Jeong Gong, Chang Seok Bang
Journal of the Korean Medical Association.2022; 65(5): 284. CrossRef

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Laser-cut-type versus braided-type covered self-expandable metallic stents for distal biliary obstruction caused by pancreatic carcinoma: a retrospective comparative cohort study: Koh Kitagawa, Akira Mitoro, Takahiro Ozutsumi, Masanori Furukawa, Yukihisa Fujinaga, Kenichiro Seki, Norihisa Nishimura, Yasuhiko Sawada, Kosuke Kaji, Hideto Kawaratani, Hiroaki Takaya, Kei Moriya, Tadashi Namisaki, Takemi Akahane, Hitoshi Yoshiji; Clin Endosc 2022;55(3):434-442. Published online October 28, 2021; DOI: https://doi.org/10.5946/ce.2021.161

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Background
/Aims: Covered self-expandable metallic stents (CMSs) are widely used for malignant distal biliary obstructions (MDBOs) caused by pancreatic carcinoma. This study compared the efficacy and safety of the laser-cut-type and braided-type CMSs.
Methods
To palliate MDBOs caused by pancreatic carcinoma, the laser-cut-type CMSs was used from April 2014 to March 2017, and the braided-type CMSs was used from April 2017 to March 2019. The tested self-expandable metallic stents were equipped with different anti-migration systems.
Results
In total, 47 patients received CMSs for MDBOs (24 laser-cut type, 23 braided-type). The time to recurrent biliary obstruction (TRBO) was significantly longer in the braided-type CMSs (p=0.0008), and the median time to stent dysfunction or patient death was 141 and 265 days in the laser-cut-type CMSs and braided-type CMSs, respectively (p=0.0023). Stent migration was the major cause of stent dysfunction in both groups, which occurred in 37.5% of the laser-cut-type CMSs and 13.0% of the braidedtype CMSs. There were no differences in the survival duration between the groups.
Conclusions
The TRBO was significantly longer for the braided-type CMSs with an anti-migration system than for the laser-cuttype. Stent migration tended to be less frequent with the braided-type CMSs than with the laser-cut-type CMSs.

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Braided-type stent versus laser-cut-type stent for patients with unresectable distal malignant biliary obstruction: a randomized controlled trial
Sho Hasegawa, Takamitsu Sato, Satoru Shinoda, Yusuke Kurita, Tomoki Ogata, Shinichi Nihei, Shin Yagi, Kunihiro Hosono, Itaru Endo, Noritoshi Kobayashi, Kensuke Kubota, Atsushi Nakajima
Gastrointestinal Endoscopy.2024; 99(5): 739. CrossRef
Removal of Duckbill‐type laser‐cut anti‐reflux metal stents: Clinical evaluation and in vitro study
Yuto Yamada, Takashi Sasaki, Tsuyoshi Takeda, Takeshi Okamoto, Takafumi Mie, Chinatsu Yonekura, Takaaki Furukawa, Akiyoshi Kasuga, Masato Matsuyama, Masato Ozaka, Takahisa Matsuda, Yoshinori Igarashi, Naoki Sasahira
DEN Open.2023;[Epub] CrossRef
Comparable Efficacy of Laser-Cut and Braided Self Expanding Metallic Biliary Stent: A Systematic Review and Meta-Analysis
Priyadarshini Loganathan, Saurabh Chandan, Babu P. Mohan, Shreyas Saligram, Douglas G. Adler
Digestive Diseases and Sciences.2023; 68(9): 3756. CrossRef
Evaluation of the mechanical properties of current biliary self-expandable metallic stents: axial and radial force, and axial force zero border
Wataru Yamagata, Toshio Fujisawa, Takashi Sasaki, Rei Ishibashi, Tomotaka Saito, Shuntaro Yoshida, Shizuka No, Kouta Inoue, Yousuke Nakai, Naoki Sasahira, Hiroyuki Isayama
Clinical Endoscopy.2023; 56(5): 633. CrossRef
Covered self-expandable metal stents for distal biliary obstruction from pancreatic carcinoma: what type of stent is preferred?
Hideyuki Shiomi, Ryota Nakano, Shogo Ota
Clinical Endoscopy.2022; 55(3): 369. CrossRef

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A Rare Case of Coil Migration into the Duodenum after Embolization of a Right Colic Artery Pseudoaneurysm: Jeongmin Choi, Young Moon Kim; Clin Endosc 2021;54(6):920-923. Published online January 12, 2021; DOI: https://doi.org/10.5946/ce.2020.228

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Transcatheter arterial embolization is a safe and effective treatment for visceral artery aneurysms; nevertheless, some complications can occur. Coil migration to other organs after embolization is extremely rare, and only 16 cases have been reported previously. We report a rare case of coil migration to the duodenal lumen after embolization of a right colic artery pseudoaneurysm. To the best of our knowledge, this is the first case of coil migration after a right colic artery embolization. The patient exhibited no symptoms and was treated conservatively without any intervention. Some previous reports have demonstrated spontaneous coil passage and successful conservative management. Our case supports conservative treatment as the primary treatment for asymptomatic patients. Clinicians should assess the risks and benefits of coil removal in asymptomatic patients before performing any intervention.

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Case report: Duodenal obstruction caused by gastroduodenal artery pseudoaneurysm with hematoma: an unusual case and literature review
Yan-Yuan Zhou, Shao-Chung Wang, Chen-June Seak, Shu-Wei Huang, Hao-Tsai Cheng
Frontiers in Medicine.2023;[Epub] CrossRef
Assessing the aneurysm occlusion efficacy of a shear-thinning biomaterial in a 3D-printed model
Grant Schroeder, Masoud Edalati, Gregory Tom, Nicole Kuntjoro, Mark Gutin, Melvin Gurian, Edoardo Cuniberto, Elisabeth Hirth, Alessia Martiri, Maria Teresa Sposato, Selda Aminzadeh, James Eichenbaum, Parvin Alizadeh, Avijit Baidya, Reihaneh Haghniaz, Roho
Journal of the Mechanical Behavior of Biomedical Materials.2022; 130: 105156. CrossRef
A case of coil migration into the colon after embolization of the spleno-renal shunt
Tomomi Sadamitsu, Fumikazu Koyama, Toshihiro Tanaka, Hiroyuki Kuge, Masayuki Sho
Techniques in Coloproctology.2022; 26(11): 923. CrossRef

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Acute Gastric Injury Caused by Undissolved Sodium Picosulfate/Magnesium Citrate Powder: Eun Young Ze, Chang Hwan Choi, Jeong Wook Kim; Clin Endosc 2017;50(1):87-90. Published online October 12, 2016; DOI: https://doi.org/10.5946/ce.2016.081

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Sodium picosulfate/magnesium citrate (SPMC) is a widely used oral bowel cleansing agent considered to be relatively safe. However, partially dissolved or undissolved SPMC powder may cause severe injuries of the esophagus and stomach. We report a very rare case of acute gastric injury without esophageal damage caused by the ingestion of undissolved SPMC powder. A 69-year-old man experienced epigastric pain after swallowing SPMC powder without dissolving it in water in preparation for a screening colonoscopy. He realized his mistake immediately and subsequently drank 2 L of water. The esophagogastroduodenoscopy conducted after 12 hours indicated an acute gastric ulceration without injury of the esophagus or duodenum. The endoscopy conducted after 6 weeks of oral proton pump inhibitor treatment showed healing of the gastric injury. This suggested that drinking large amounts of water after ingesting partially dissolved or undissolved SPMC powder can prevent serious esophageal injury, but offers no preventive benefit for acute gastric injury.

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Riesgos, indicaciones y aspectos técnicos de la colonoscopia en pacientes de edad avanzada o con fragilidad. Documento de posicionamiento de la Societat Catalana de Digestologia, la Societat Catalana de Geriatria i Gerontologia i la Societat Catalana de M
Salvador Machlab, Esther Francia, Juanjo Mascort, Pilar García-Iglesias, Juan Manuel Mendive, Francesc Riba, Carles Guarner-Argente, Mònica Solanes, Jordi Ortiz, Xavier Calvet
Gastroenterología y Hepatología.2024; 47(1): 107. CrossRef
Risks, indications and technical aspects of colonoscopy in elderly or frail patients. Position paper of the Societat Catalana de Digestologia, the Societat Catalana de Geriatria i Gerontologia and the Societat Catalana de Medicina de Familia i Comunitaria
Salvador Machlab, Esther Francia, Juanjo Mascort, Pilar García-Iglesias, Juan Manuel Mendive, Francesc Riba, Carles Guarner-Argente, Mònica Solanes, Jordi Ortiz, Xavier Calvet
Gastroenterología y Hepatología (English Edition).2024; 47(1): 107. CrossRef
Quality of bowel preparation in patients with inflammatory bowel disease undergoing colonoscopy: What factors to consider?
Antonietta Gerarda Gravina, Raffaele Pellegrino, Mario Romeo, Giovanna Palladino, Marina Cipullo, Giorgia Iadanza, Simone Olivieri, Giuseppe Zagaria, Nicola De Gennaro, Antonio Santonastaso, Marco Romano, Alessandro Federico
World Journal of Gastrointestinal Endoscopy.2023; 15(3): 133. CrossRef
Regulation of a delicate problem in patients with rectal diseases
V. V. Skvortsov, A. A. Eremenko, N. V. Eremenko
Ambulatornaya khirurgiya = Ambulatory Surgery (Russia).2022; 19(1): 81. CrossRef
Esophageal Stricture Caused by the Ingestion of Undissolved Picosulfate Powder
Daehyun Kim, Byungha Cho, Jong Wook Choi, Ki Bae Kim, Seon Mee Park
Clinical Endoscopy.2021; 54(1): 122. CrossRef
Optimal Laxatives for Oral Colonoscopy Bowel Preparation: from High-volume to Novel Low-volume Solutions
Soo-Young Na, Won Moon
The Korean Journal of Gastroenterology.2020; 75(2): 65. CrossRef
Unexpected caustic esophageal injury associated with the use of a bowel preparation agent
Yi-Ting Chou, Tien-Yu Huang, Chao-Feng Chang
Journal of Medical Sciences.2019; 39(5): 251. CrossRef
Acute Abdominal Pain after Ingestion of Bowel Cleansing Agent for Colonoscopy
Hwon Kim, Jong Seol Park, Yong Sung Kim
The Korean Journal of Helicobacter and Upper Gastrointestinal Research.2018; 18(4): 275. CrossRef

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