Malignant Tracheal Stenosis: A Narrative Review of Current Diagnostic and Therapeutic Approaches

Background

Malignant tracheal stenosis (MTS) is a rare, life-threatening condition caused by primary tracheal tumor, mainly adenoid cystic carcinoma (ACC) and squamous cell carcinoma (SCC), and more rarely other primary neoplasms such as lymphomas, or local extension/metastasis from adjacent malignancies (thyroid, esophageal, lung, or mediastinal cancers). Accounting for <0.1% of respiratory tumors, MTS presents with progressive respiratory failure, requiring urgent multidisciplinary care involving thoracic surgery, interventional pulmonology, oncology, and intensive care. Diagnosis relies on clinical evaluation, advanced imaging and endoscopy. Bronchoscopy (BC) remains the best investigation for direct visualization and biopsy or performing therapeutic maneuvers. Prognosis depends on histology, local extent, and achieving R0 resection. Tracheal resection with primary anastomosis remains the curative standard for resectable cases. Interventional procedures (debulking, laser, cryotherapy, stenting) are essential for palliative management and acute stabilization.