Benign biliary and pancreatic diseases, such as postoperative strictures and bile leaks, present significant challenges in clinical practice. Traditionally, patients require temporary ductal decompression with plastic or metal stents. However, these devices often necessitate repeat interventions for removal or management of migrations and occlusions. Consequently, biodegradable biliary stents have emerged as a promising alternative, offering temporary structural support while undergoing spontaneous degradation. This innovative approach eliminates the need for retrieval procedures, potentially reducing the burden on both patients and healthcare systems.

Clinical Efficacy of Biodegradable Biliary Stents

A recent systematic review analyzing 467 patients across fifteen studies highlights the impressive performance of these devices. Technical success was nearly universal at 99.4%, demonstrating the feasibility of placement via both ERCP and percutaneous transhepatic cholangiography (PTC). Furthermore, clinical success reached 73.3%, particularly in cases of benign biliary strictures and post-cholecystectomy bile leaks. Most devices utilized polydioxanone-based materials, which provide reliable radial support during the initial healing phase before hydrolytic degradation occurs. Similarly, these stents offer a larger diameter than standard plastic options, which may improve drainage outcomes.

Safety and Complication Profiles

While the safety profile is generally favorable, clinicians must remain vigilant regarding potential adverse events. The review identified 108 complications, with cholangitis being the most frequent occurrence. Other reported issues included stricture recurrence, haemobilia, and fever. Interestingly, migration and pancreatitis occurred less frequently compared to traditional stenting methods. Although the mean reintervention rate was 35.5%, this figure often reflects planned clinical management rather than device failure. Consequently, the use of biodegradable biliary stents appears safe and effective for selected conditions when managed by experienced multidisciplinary teams.

Future Outlook for Biliary Management

The transition toward bioresorbable technology represents a significant shift in managing benign ductal diseases. Despite the positive findings, the authors emphasize the need for further prospective randomized trials. Such research will help establish optimal indications and refine the long-term outcomes of these devices. Moreover, understanding the exact degradation timelines in different physiological environments will allow for better planning of follow-up care. Therefore, while current data is encouraging, long-term monitoring remains essential to confirm these benefits across diverse patient populations.

Frequently Asked Questions

What are the primary benefits of biodegradable biliary stents?

The main advantage is the elimination of a second procedure for stent removal. Since the material degrades naturally, patients avoid the risks and costs associated with retrieval endoscopies or surgeries.

Which materials are commonly used in these stents?

Most biodegradable stents are made from polydioxanone, a biocompatible polymer. It provides structural support for several weeks before breaking down through hydrolysis into non-toxic metabolites.

Are there any significant risks associated with these stents?

Common complications include cholangitis and potential stricture recurrence. However, migration and pancreatitis rates are typically lower than those seen with traditional plastic or metal stents.

Disclaimer: This content is for informational and educational purposes only and does not constitute medical advice or a professional relationship. Always seek the advice of a qualified healthcare provider regarding any medical condition. Refer to the latest local and national guidelines for clinical practice.

References

1. Peristeri DV et al. Biodegradable Stents in Benign Biliary and Pancreatic Disease: A Systematic Review. Surg Innov. 2026 Feb 08. doi: 10.1177/15533506261424134. PMID: 41655080.

2. Barbiero G, et al. Biodegradable Biliary Stents for Percutaneous Treatment of Post-liver Transplantation Refractory Benign Biliary Anastomotic Strictures. Cardiovasc Intervent Radiol. 2020;43(5):747-754.

3. Siiki A, et al. A systematic review of biodegradable biliary stents: promising biocompatibility without stent removal. Eur J Gastroenterol Hepatol. 2018;30(8):813-818.