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Unresectable malignant biliary obstruction: treatment by self-expandable biliary endoprostheses
Summary
Self-expandable metallic stents offer encouraging palliation for malignant biliary obstruction. While effective for many, further studies are needed to compare them against traditional methods.
Area of Science:
- Gastroenterology
- Interventional Radiology
- Oncology
Background:
- Malignant biliary obstruction often requires palliation to relieve jaundice.
- While operative biliary bypass is established, nonoperative methods are desirable for select patients.
Purpose of the Study:
- To evaluate the efficacy and safety of percutaneously placed self-expandable metallic biliary endoprostheses (Wallstent) for malignant biliary obstruction.
- To assess stent patency, patient survival, and complication rates.
Main Methods:
- Retrospective analysis of 48 Wallstent placements in 35 patients with unresectable malignant biliary obstruction.
- Included patients with primary tumors, lymph node metastases, and post-anastomotic obstruction.
Main Results:
- Excellent palliation (76%) was achieved for most of the survival time.
- Complications occurred in 31.4% of patients, with a 14.3% 30-day mortality.
- Stent occlusion requiring intervention occurred in 24% of patients.
Conclusions:
- Percutaneous self-expandable metallic stents provide encouraging palliation for malignant biliary obstruction in selected patients.
- Results do not conclusively support superiority over conventional plastic stents; further randomized trials are necessary.