Computed tomography of neoplastic tracheal stenosis

Cavitating squamous cell carcinoma in the right upper lobe with adjacent mediastinal invasion. Axial computed tomographic (CT) scan (A) shows severe circumferential tracheal stenosis (arrow) due to extrinsic neoplastic compression as well as marked narrowing of the superior vena cava (dashed arrow). Coronal CT chest in the same patient (B) confirms severe circumferential stenosis of the intrathoracic trachea (arrows).