Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Previously seen left greater than right bibasilar heterogeneous opacities have improved . There is minimal residual left basilar opacity . A small left pleural effusion has decreased and is very small . There is no right pleural effusion . The lungs are otherwise clear . Mild - to - moderate cardiomegaly is not significantly changed . The mediastinal contours are normal . A linear artifact extends through the right portion of this radiograph . There is no pneumothorax .
    OUTPUT:
    
1 . Minimal residual left basilar opacity although prior left lower lung opacities are almostly fully resolved . 2 . Tiny residual left pleural effusion . 3 . Persistent mild - to - moderate cardiomegaly .