Management of Tracheal Stenosis

Initial Assessment and Diagnosis

A comprehensive evaluation should include respiratory-focused history, physical examination, chest CT scan, and appropriate laboratory investigations to determine the etiology and extent of tracheal stenosis 1, 2
Tracheal stenosis is defined as part of central airway obstruction (CAO), characterized by 50% or greater occlusion of the trachea 2, 3

Rigid bronchoscopy is preferred over flexible bronchoscopy for therapeutic interventions, with general anesthesia/deep sedation recommended over moderate sedation, and either jet ventilation or controlled/spontaneous assisted ventilation can be used 1, 4
For stenosis, airway dilation (alone or combined with other modalities) is a recommended bronchoscopic technique 1, 2
Local therapy options include Mitomycin C application, with a 75% success rate at 4 months 5, 6
Stent placement is reserved for cases where other bronchoscopic and systemic treatments have failed, with silicone stents preferred for benign stenosis 1, 6

For patients with tracheobronchomalacia, noninvasive ventilation may be considered as primary intervention, and for severe cases, a stent trial followed by tracheobronchoplasty may be considered 4
Long-term surveillance is necessary, particularly for patients with stents, with either routine surveillance bronchoscopy or symptom-driven bronchoscopy being acceptable 1, 7

The American Thoracic Society recommends that treatment decisions should be made by a multidisciplinary team with expertise in airway management 1, 4
All current recommendations are based on very low certainty of evidence, emphasizing the need for careful consideration in treatment planning 1, 4

High-grade obstructions at the trachea, main carina, or both main bronchi require emergent endoscopic treatment to ensure survival, as recommended by the European Respiratory Society 8, 9
The European Respiratory Society suggests that less severe stenosis can undergo more thorough evaluation before definitive treatment, but high-grade obstructions require immediate intervention 8, 9

For endobronchial lesions, the European Respiratory Society recommends laser resection or electrocautery for debulking, and considers photodynamic therapy for appropriate cases 8, 9, 10
For extrinsic compression, stent placement is recommended to maintain airway patency, and brachytherapy may be considered 8, 10
For mixed lesions, a combination of debulking techniques and stent placement is suggested, with multimodality treatment showing extended duration of local tumor control 8, 9, 10

Metallic stents may be appropriate for malignant disease, according to the European Respiratory Society 8

Failure to recognize the urgency of high-grade obstructions requiring immediate intervention is a common pitfall, as emphasized by the European Respiratory Society 8