Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right internal jugular Swan - Ganz catheter remains coiled within the right ventricle with the tip continuing on and terminating in the main pulmonary artery . Lung volumes are low . There is mild persistent pulmonary edema . Left retrocardiac opacity persists . There is no pneumothorax . Cardiomediastinal silhouette is grossly stable .
    OUTPUT:
    
1 . Swan - Ganz catheter tip is in the main pulmonary artery however proximally the catheter remains coiled in the right ventricle . 2 . Persistent mild pulmonary edema . 3 . Persistent left retrocardiac opacity .