Endoscopic ultrasound–guided drainage of intra-abdominal abscess using 15-mm versus 10-mm lumen-apposing metal stents: an international case-matched study

• Published in: Gastrointestinal endoscopy Vol. 102; no. 1; pp. 134 - 138.e1
• Main Authors: Ichkhanian, Yervant, Chaudhary, Ammad J., Veracruz, Nicolette, Faisal, Muhammad Salman, Peller, Matthew T., Kushnir, Vladimir, Daugherty, Tyler, Genere, Juan Reyes, Pawa, Rishi, Pawa, Swati, Ahmed, Wafaa, Huggett, Matthew T., Paranandi, Bharat, Aparicio, José Ramón, Martínez-Moreno, Belén, Nimri, Faisal, Ashraf, Taha, Alluri, Spandana, Obri, Mark, Dang, Duyen, Singla, Sumit, Piraka, Cyrus, Zuchelli, Tobias
• Format: Journal Article
• Language: English
• Published: United States Elsevier Inc 01.07.2025
• Subjects: Abdominal Abscess - surgery; Adult; Aged; Aged, 80 and over; Case-Control Studies; Drainage - instrumentation; Drainage - methods; Endosonography; Female; Humans; Male; Middle Aged; Retrospective Studies; Stents; Treatment Outcome; Ultrasonography, Interventional; AE; LAMS; EUS
• ISSN: 0016-5107; 1097-6779; 1097-6779
• DOI: 10.1016/j.gie.2025.01.002

Efficacy and safety of endoscopic ultrasound (EUS)–guided placement of lumen-apposing metal stents (LAMSs) has been reported, but the advantage of using 15-mm LAMSs over 10-mm LAMSs has yet to be explored. This was an international, retrospective, case-matched study of patients with intra-abdominal abscess who underwent EUS-guided drainage with 15-mm (case) and 10-mm (control) LAMSs from March 2019 through September 2022. Fifty-one patients underwent EUS-guided drainage using LAMSs (15-mm, 29 [57%]; 10-mm, 22 [43%]). The most common location of the abscess was peripancreatic 43%. Technical success rate was achieved in 97% of the case subjects and 100% of the control subjects (P = .412), and clinical success was achieved in 98% and 96%, respectively (odds ratio, 1.3; P = .089). Adverse events occurred in 7.8% of the case subjects. Patients with 15-mm LAMSs underwent fewer total endoscopic procedures (mean, 2.5 vs 3.6; P < .023). Both sizes showed similar clinical success and safety profiles, with a significant trend of the need for fewer endoscopic procedures with the 15-mm LAMS.