Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright portable views of the chest were obtained . The patient is status post right thoracoplasty procedure , similar in appearance compared to the prior study . There is persistent blunting of the left costophrenic angle and a small underlying pleural effusion is not excluded . There is increased left base opacity which could be due to infection and / or aspiration . Chain sutures are again seen projecting over the left mid hemithorax consistent with previous wedge resections .
    OUTPUT:
    
Persistent blunting of the left costophrenic angle may be due to underlying pleural effusion . Increased left mid to lower lung opacity raises concern for overlying infection .