Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs were obtained . There has been interval improvement in bilateral lower lung opacifications . However , a persistent retrocardiac opacity remains in the lower lobes . There is left lower lobe atelectasis and layering pleural effusion . There is also an increase in the size of the right pleural effusion . There is moderate , stable cardiomegaly . The mediastinal contours are widened , likely reflective of central lymphadenopathy . There is no pneumothorax .
    OUTPUT:
    
1 . Focal opacity in lower lobes could reflect an infectious process in the appropriate clinical setting . 2 . Mediastinal widening , likely related to central lymphadenopathy . Recommend followup with CT scan . Findings were communicated with ___ by Dr . ___ ___ telephone at the time of observation at 5 :11 p .m . on ___ .