Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Elevation of the left lung base due to persistent abnormalities , a combination of left lower lobe collapse , pleural effusion and postoperative seroma as well as a dilated fluid - filled esophagus , appear stable . There may be a trace right - sided pleural effusion . There is no pneumothorax . There is no pulmonary edema .
    OUTPUT:
    
Given differences in modality , relatively unchanged appearance of the chest since the ___ CTA with left lower lobe opacities , a combination of pleural effusion , postoperative seroma and a dilated fluid - filled esophagus .