Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate hyperexpanded lungs . There is no focal consolidation , pleural effusion , or pneumothorax . Vascular deficiency in the upper lungs could be due to emphysema , even though lungs are not clearly hyperinflated . Hilar and mediastinal silhouettes are unremarkable . Heart size is normal . Cervical fusion hardware is partially imaged . Mild anterior wedge deformities of the mid thoracic vertebral bodies appear longstanding .
    OUTPUT:
    
No evidence of acute cardiopulmonary process . Possible emphysema .