Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart remains moderately enlarged . Lung volumes are decreased . Retrocardiac opacity could be secondary to atelectasis , however an underlying focal consolidation can not be entirely excluded in this single - view . Blunting of the left costophrenic angle could be secondary to a small amount of pleural fluid . The right hemithorax remains clear with no new focal consolidation identified .
    OUTPUT:
    
1 . Persistent retrocardiac opacity which could be secondary to atelectasis , however an underlying focal consolidation can not be entirely excluded in this portable examination . 2 . Blunting of the left costophrenic angle reflect moderate amount of pleural fluid . Small right pleural effusion 3 . Low lung volumes and cardiomegaly .