Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to chest radiographs from ___ , left pleural effusion and associated retrocardiac opacity have improved . Mild central vascular congestion without overt pulmonary edema stable . Trace , if any , effusion on the right . Significant cardiomegaly is unchanged , as well as significant tortuosity and unfolding of the thoracic aorta . No focal consolidation . No pneumothorax .
    OUTPUT:
    
1 . Improved left pleural effusion , now small , and decreased adjacent retrocardiac opacity . 2 . Stable significant cardiomegaly . Mild central vascular congestion without overt pulmonary edema .