Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is vascular congestion and low lung volumes in the left lung base , possibly due to obstructed airways from aspiration versus retained secretions as atelectasis was seen in the left lung base on the CT from ___ . Central hilar and mediastinal adenopathy including some calcified lymph nodes are better seen on the recent CT from ___ .
    OUTPUT:
    
Low lung volumes and vascular congestion in the left lung base may be due to obstructed airways from aspiration or retained secretions .