Transbronchoscopic cryotherapy for a giant sputum plug straddling the tracheal carina: A case report

A chest computed tomography scan revealed a strip-shaped, columnar, and high-density lesion in the lumen of the trachea as well as in the right and left main bronchi, which was initially thought to be secreted. Histopathological examination confirmed the presence of a sputum plug characterized by mucus components, inflammatory exudates, and necrotic tissue.