Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Endotracheal tube terminates 6 cm above the carina . Enteric tube courses below the diaphragm and terminates at the upper stomach . Left PICC line terminates at the mid SVC . Hyperexpanded lungs suggest underlying COPD . Persistent retrocardiac opacity is consistent with left lower lung collapse and probable layering effusion . There is a small residual pleural effusion on the right , if any . The cardiac silhouette is normal .
    OUTPUT:
    
Persistent retrocardiac opacity , likely related to left lower lobe collapse with layering pleural effusion . These findings were discussed with ___ , NP by Dr . ___ via telephone on ___ at 3 :52 p .m .