Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A Swan - Ganz catheter extends to the right pulmonary artery , and can be pulled back approximately 4 cm . Endotracheal tube in appropriate position . Transvenous pacing veins ending in the right atrium and right ventricle . A nasoenteric to the crosses the left hemidiaphragm with its tip not visualized . Since prior , the appearance of the lungs is not significantly changed with diffuse bilateral airspace opacities , most pronounced at the right upper lung zone . The cardiac silhouette is stably enlarged with persistent retrocardiac atelectasis . There is no pneumothorax . There are bilateral layering pleural effusions .
    OUTPUT:
    
1 . Swan - Ganz catheter extends to the right pulmonary artery and can be pulled back approximately 4 cm . 2 . Persistent diffuse bilateral airspace opacities most pronounced in the right upper lobe , compatible with pulmonary edema although a multifocal infection would have to be considered in the correct clinical setting .