Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No focal consolidation , pleural effusion or evidence of pneumothorax is seen . Cardiac , mediastinal , and hilar contours are stable . There is flattening of the diaphragm , suggesting chronic obstructive pulmonary disease .
    OUTPUT:
    
No acute cardiopulmonary process . Flattening of the diaphragms suggests chronic obstructive pulmonary disease . No significant interval change since the prior study .