Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are stable . There is no wall pneumothorax . Slight blunting of the right costophrenic angle is consistent with a small right pleural effusion . There may be a tiny left pleural effusion as well . Lungs are hyperexpanded with flattened hemidiaphragms , consistent with COPD . There is no focal consolidation concerning for pneumonia . There is no free air in the upper abdomen .
    OUTPUT:
    
No acute intrathoracic process .