Prospective randomized study comparing double layer and Tannenbaum stents in distal malignant biliary stenosis

Area of Science:

• Gastroenterology
• Interventional Radiology
• Oncology

Background:

• Malignant biliary obstruction is a serious condition requiring effective palliation.
• Biliary stenting is a common palliative treatment for inoperable malignant biliary obstruction.
• Different stent materials and designs may impact outcomes.

Purpose of the Study:

• To compare the patency and effective drainage of two biliary plastic stents with different materials but similar design.
• To evaluate the safety and efficacy of Double Layer Stent (DLS) versus Tannenbaum Stent (TAN) in palliative care.

Main Methods:

• A prospective randomized study involving 49 patients with inoperable malignant biliary obstruction.
• Patients were randomly assigned to receive either a 10F DLS (n=24) or a 10F TAN stent (n=25).
• Key outcomes analyzed included stent patency, effective drainage, and adverse events.

Main Results:

• Successful stent placement was achieved in all patients with minor complications.
• Median stent patency rates were similar between DLS (107.5 days) and TAN (101 days) groups (p=0.066).
• Effective drainage rates at two weeks were high and comparable for both stents (95.8% for DLS, 96% for TAN; p=1.00).

Conclusions:

• Both DLS and TAN biliary plastic stents are effective and comparable for palliation of malignant biliary obstruction.
• The study demonstrates similar stent patency and complication rates between the two stent types.
• These findings support the use of either DLS or TAN stents based on clinical considerations.