Endoscopic treatment of stenosing active tuberculosis to prevent complete bronchial occlusion: a case report and literature review

Background: Benign central airway scar stenosis, a refractory complication of endobronchial tuberculosis and other inflammatory conditions, often leads to atelectasis, recurrent infections, and respiratory dysfunction. Traditional surgical interventions are associated with significant trauma and high restenosis rates. Case presentation: This case report describes a 28-year-old female with stenosing active tuberculosis of the left upper lobe bronchus, presenting with cough, high-grade fever, and lobar collapse. The patient underwent transbronchial needle knife electrocautery for precise scar tissue dissection, followed by sequential cryoablation to suppress granulomatous proliferation and balloon dilation for airway remodeling. After five interventional bronchoscopic procedures, complete luminal patency was achieved, with no recurrence observed during 8-month follow-up. Conclusion: Through this case demonstration and literature review, we highlight the clinical value of combined bronchoscopic techniques (high-frequency electrocautery, cryotherapy, and balloon dilation) in managing stenosing active tuberculosis and preventing complete bronchial occlusion, providing clinicians with a minimally invasive therapeutic alternative.