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Metallic endoprostheses for malignant tracheobronchial obstruction: initial experience
B S Tan1, A F Watkinson, J E Dussek
1Division of Radiological Sciences, United Medical and Dental School, Guy's and St. Thomas' Hospitals, London, United Kingdom.
Purpose:
To assess the efficacy of the Wallstent endoprosthesis in malignant tracheobronchial obstruction.
Methods:
Seven patients with irresectable carcinoma of the bronchus were treated with nine Wallstent endoprostheses. The procedures were performed under endoscopic and fluoroscopic guidance. Wallstent endoprostheses ranging from 8-16 mm in diameter and 26-49 mm in length were deployed after balloon dilatation of the strictures.
Results:
All stents were successfully deployed in the desired positions. There was one procedural complication and one procedure related death. Three patients showed significant improvement in respiratory status after stenting. At a mean follow-up of 5.1 months, there has been no stent migration, fracture, or collapse. One patient had proximal tumor overgrowth that was treated with additional stent insertion. One patient died after a bout of massive hemoptysis 3 months poststenting and it was difficult to tell whether this was related to the endoprosthesis.
Conclusion:
The use of the Wallstent endoprosthesis in malignant tracheobronchial obstruction is technically feasible.