Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without focal consolidation . Slight blunting of the left posterior costophrenic on the lateral view could be due to a trace pleural effusion . No pneumothorax is seen . The cardiac and mediastinal silhouettes are stable . Hilar contours are stable .
    OUTPUT:
    
Possible trace left pleural effusion . No focal consolidation to suggest pneumonia .