Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is persistent mild elevation of the left hemidiaphragm with overlying atelectasis . Left basilar opacity is grossly similar compared to the prior study which could relate to chronic aspiration acute component not excluded , opacity may be slightly increased . . There is persistent minimal blunting of the left costophrenic angle . No pneumothorax is seen . Cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
Persistent left basilar opacity , possibly very minimally increased as compared to the prior study . Findings may be due to chronic aspiration , however common acute component not excluded . Aside from this , no significant interval change .