Fig. 7
From: Imaging of urgencies and emergencies in the lung cancer patient
Tracheo-oesophageal fistula in a 60-year-old man with known stage IV non-small cell lung cancer who presented with a fever and had complaints of dysphagia. a Axial contrast-enhanced CT in mediastinal window setting shows a large left hilar mass encasing the left pulmonary artery with associated retro-obstructive atelectasis of the left upper lobe. Note mediastinal invasion extending to the trachea and oesophagus (yellow arrow). b Axial CT image at the level of the aortic arch reveals an extraluminal gas collection adjacent to both oesophagus and trachea. Both the walls of the oesophagus and trachea are thickened at this level with blurring and fatty infiltration of the surrounding fat planes. c Reformatted image in the coronal plane nicely depicts the presence of fluid, debris and air-bubbles in the trachea (double yellow arrows). The combination of findings is indicative of a tracheo-oesophageal fistula