CT
The right lower lobe bronchus is occluded, and collapse consolidation of the right lower lobe is evident. A large ill-defined infiltrative mass encases the right hilar structures and extends into the adjacent mediastinum. After contrast medium administration, prominent vessels traverse an airless low attenuation portion of the consolidated lung (CT angiogram sign), and are displaced around a relatively hypovascular and lower attenuation area.
A few subcarinal and right paratracheal lymph nodes have a short axis diameter of up to 20 mm.
Mild mediastinal shift to the right.