84 - Percutaneous Treatment of Bilioenteric Anastomotic Strictures: Comparison of Long-Term Outcomes Between Temporary Covered Stents and Balloon Dilation

Purpose: To compare the long-term outcomes of temporary covered stent placement versus percutaneous balloon dilation in treating benign bilioenteric anastomotic strictures.

Materials and Methods: Eighty-three patients with benign bilioenteric anastomotic stricture from December 2014 to May 2023 were included in the study. Balloon dilation was performed up to 3 times in 46 patients (balloon group) and temporary covered stent placement aiming at spontaneous migration was performed in 23 patients (stent group). Technical and clinical success, primary patency rates, percutaneous transhepatic biliary drainage (PTBD) indwelling times, and complications were compared between the two groups.

Results: The median follow-up was 963 days for the balloon group and 1151 days for the stent group (p=0.775). Technical success was achieved in 46 of 60 patients (76.7%) in the balloon group and in all patients in the stent group. Clinical success was achieved in all patients with technical success. The stent group showed higher primary patency rates (90.2%, 83.3%, 74.0%, and 74.0% vs. 72.9%, 56.8%, 39.7%, and 39.7% at 1, 3 5, and 7 years; p=0.033) and a shorter median PTBD indwelling time (4 days vs. 6 days; p=0.031) compared to the balloon group. Spontaneous migration of the stent was found in 19 of 23 patients (82.6%), with a median stent indwelling time of 3 months (range, 3–12 months).

Conclusion: Percutaneous temporary covered stent placement is an effective treatment option for patients with benign bilioenteric anastomotic strictures, offering higher primary patency rates and shorter PTBD indwelling times, compared to balloon dilation over a long-term period.