Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest were obtained . Cardiomediastinal contour is unchanged compared to the prior examination . Lung volumes are slightly low accentuating bronchovascular markings without evidence of focal consolidation . There is no pleural effusion or pneumothorax . Pacer device projects over the left upper chest with leads in stable position .
    OUTPUT:
    
Low lung volumes without evidence of acute intrathoracic abnormality .