Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again visualized is the large posterior left lung mass overlying the spine , better visualized on the recent CT . The multiple metastatic nodules are also better characterized on the recent CT . Bilateral lower lung predominant interstitial opacities are present , similar to ___ radiograph . There are stable small bilateral pleural effusions . The cardiomediastinal silhouette is stable in appearance . The bilateral hilar enlargement is due to adenopathy , unchanged from prior . The pulmonary vasculature is normal . No pneumothorax is seen .
    OUTPUT:
    
1 . Stable large left posterior left lung mass with multiple metastatic nodules , better characterized on the recent CT . 2 . Interstitial thickening may represent edema , an atypical infection , and less likely lymphangitic carcinomatosis given the lack of significant interstitial thickening on the recent CT . 3 . Persistent intrathoracic adenopathy . 4 . Stable small bilateral pleural effusions .