PMID: 20646632Jul 22, 2010Paper

Endoscopic retrieval of metallic stents in patients with airway diseases

Zhonghua yi xue za zhi
Hong-wu WangNan Zhang

Abstract

To evaluate the indications, techniques, outcomes and complications of metallic stent removals in patients with airway disorders. A retrospective analysis was performed in 43 patients with 47 tracheobronchial stents. The airway stent retrieval was performed under the guidance of rigid or flexible bronchoscopy between November 2005 and November 2009. There were 25 cases with 27 Z-type stents (25 covered metallic stents, CMS; 2 uncovered metallic stents, UCMS) and 18 cases with 20 Nitinol stents (4 CMS, 16 UCMS). Excessive stent-related granuloma formation or recurrent tumor in patients with UCMS group was similar to those with CMS (94.4% vs 89.7%). Fracture of stents in patients with UCMS group was higher than that in CMS group (83.3% vs 10.3%, P < 0.01). Thirty-eight of 47 (80.9%) stents (Z-type stents 85.2%, Nitinol 75.0%) were successfully removed. Among them, 15 stents (39.5%) were retrieved by rigid bronchoscopy and 23 (60.5%) stents by flexible bronchoscopy (20 under local anesthesia and 3 under pain-free anesthesia). 87.0% (20/23) Z-type CMS was removed with a retrieval hook by a flexible bronchoscopy under local anesthesia with an average duration of pre-removal stenting of (3.5 +/- 0.6) months while 80% (12/15) Nitinol ...Continue Reading

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