Fig. 2

a. Axial contrast-enhanced chest CT scan with mediastinal-windowing shows an enhanced endoluminal mass within the left main bronchus (black arrow) and clockwise mediastinal shift. MPA, main pulmonary artery; RPA, right pulmonary artery; Ao, ascending aorta; DAo, descending aorta; RIPV, right inferior pulmonary vein. b. Axial chest CT scan with mediastinal-windowing demonstrates the completely collapsed left lung lying posterior to the heart (black arrow). Ao, ascending aorta; RA, right atrium; RV, right ventricle; LA, left atrium; LV, left ventricle; DAo, descending aorta. c. Axial chest CT scan section at the level of the right upper lobe imaged with lung window shows clockwise mediastinal shift with herniation of the right upper lobe into the left hemithorax. RULB, right upper lobe bronchus; (RB1), right upper lobe apical segmental bronchus; (RB2), right upper lobe posterior segmental bronchus; (RB3), right upper lobe anterior segmental bronchus. d. Coronal contrast-enhanced chest CT scan with mediastinal-windowing, shows extreme mediastinal shift towards the left and significant clockwise rotation of the heart (black arrow). e. Coronal contrast-enhanced chest CT scan imaged with lung window, shows overexpansion and substantial herniation of the right lung into the left hemithorax as well as severe clockwise rotation of the heart (black arrow)