Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A portable frontal chest radiograph demonstrates pacer wires overlying the patient 's chest . There is a normal cardiomediastinal silhouette . Lungs are clear , but most likely hyperinflated . Also there is paucity of the vasculature in the upper lungs most likely consistent with emphysema . No focal consolidation , edema , pleural effusion , or pneumothorax is seen . There is elevation of the left hemidiaphragm vs . pleural abnormality vs , diaphragmatic hernia . Correlation with lateral chest radiograph or chest CT is necessary . The visualized upper abdomen is unremarkable .
    OUTPUT:
    
No acute cardiopulmonary process .