Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . An endotracheal tube , Swan - Ganz catheter , right - sided Port - A - Cath , and orogastric tube are unchanged in position . Since the ___ examination there has been improved aeration of the left lower lung zone . Diffuse nodular opacities are again seen throughout the right lung , unchanged since the prior examination , likely reflecting edema as seen on the chest CT from ___ . There is no right pneumothorax or right pleural effusion .
    OUTPUT:
    
Improved aeration of the left lung . Unchanged widespread nodular opacities throughout the pulmonary parenchyma , likely reflecting edema , are also seen on the chest CT from ___ . No right pneumothorax or right effusion .