Table 1. Search strategy used for each database.

MeSH: Medical Subject Headings

Database	Search strategy	Results
PubMed	Bronchoscopy[tw] OR Bronch*[tw] OR "Bronchoscopy"[Mesh] AND Airway stent[tw] OR Stent[tw] OR "Stents"[Mesh] OR "Catheterization"[Mesh] AND Airway[tw] OR Obstruction[tw] OR “Bronchial obstruction” [tw] OR “Tracheobronchial obstruction” [tw] OR "Airway Obstruction"[Mesh] AND “Lung cancer” [tw] OR Cancer[tw] OR Neoplasm[tw] OR Malig*[tw] OR Malignancy[tw] OR "Lung Neoplasms"[Mesh] OR "Neoplasms"[Mesh]	376
Cochrane	Bronchoscopy AND Stent OR Catheterization OR Airway stent AND Tracheobronchial obstruction OR Bronchial obstruction OR Airway obstruction AND Lung neoplasm OR Lung malignancy OR Lung cancer OR Malignancy OR Tumor OR Cancer	1
Embase	Fiberoptic bronchoscopy OR Bronchoscopy AND Tracheobronchial stent AND Airway obstruction OR Bronchus obstruction OR Trachea obstruction OR Trachea stenosis AND Lung cancer OR Lung tumor OR Neoplasm OR Malignant neoplasm OR Malignant	5