Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is blunting of the left costophrenic angle raising concern for a small left pleural effusion . Left base streaky retrocardiac opacity may relate to pleural effusion and atelectasis although an underlying consolidation is not excluded . The right lung is clear . There is no evidence of pneumothorax . The cardiac and mediastinal silhouettes are unremarkable .
    OUTPUT:
    
Blunting of the left costophrenic angle raises concern for small pleural effusion with overlying atelectasis , patchy left base retrocardiac opacity may relate to pleural effusion and atelectasis , underlying consolidation not excluded .