Treatment of Benign and Malignant Tracheobronchial Obstruction with Metal Wire Stents: Experience with a Balloon-Expandable and a Self-Expandable Stent Type

Journal Article · Sun Aug 15 04:00:00 EDT 2004 · Cardiovascular and Interventional Radiology

DOI:https://doi.org/10.1007/S00270-003-2686-X· OSTI ID:21088255

Rieger, Johannes ^[1]; Hautmann, Hubert ^[2]; Linsenmaier, Ulrich; Weber, Cristoph; Treitl, Markus ^[1]; Huber, R M ^[2]; Pfeifer, Klaus-Juergen ^[1]

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1. University Hospitals of the Ludwig-Maximilians-University, Department of Clinical Radiology (Germany)
2. University Hospitals of the Ludwig-Maximilians-University, Department of Pneumology (Germany)

Over the last few years various types of metal wire stents have been increasingly employed in the treatment of both malignant and benign tracheobronchial obstruction. To date, however, few studies have investigated the in vivo properties of different stent types. We implanted 26 balloon-expandable tantalum Strecker stents (18 patients) and 18 self-expandable Wallstents (16 patients) into the tracheobronchial system of 30 patients with combined stenting in 4 patients. Mean age was 51 years (range: 0.5-79 years). Malignant disease was present in 23 patients, benign disease in seven patients. Both patients and individual stents were monitored clinically and radiographically. The probability of stents remaining within the tracheobronchial system, and of their remaining undislocated and uncompressed was calculated using Kaplan-Meier analysis for both stent types. Average stent follow-up time was 112 days until explantation and 115 days until patients' death or discharge. Kaplan-Meier analysis revealed a higher probability for the Wallstent to remain within the tracheobronchial system. Dislocation and compression occurred more rarely. Explantation, however, if desired, was more difficult compared to the Strecker stent. The Wallstent also led to the formation of granulation tissue, especially at the proximal stent end, frequently requiring reintervention. Both stent types proved to be effective therapeutic options in the management of obstructive tracheobronchial disease. The mechanical properties of the Strecker stent seem to be less favorable compared to the Wallstent but removal is easy. For benign disease, however, the Wallstent reveals limitations due to significant side effects.

• OSTI ID: 21088255
• Journal Information: Cardiovascular and Interventional Radiology, Journal Name: Cardiovascular and Interventional Radiology Journal Issue: 4 Vol. 27; ISSN 0174-1551; ISSN CAIRDG
• Country of Publication: United States
• Language: English

Related Subjects

62 RADIOLOGY AND NUCLEAR MEDICINE
IN VIVO
MECHANICAL PROPERTIES
PATIENTS
SIDE EFFECTS
TANTALUM
VASCULAR DISEASES