Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate a normal cardiomediastinal silhouette and hyperinflated lungs without focal consolidation , pleural effusion , or pneumothorax . Diffuse increased interstitial prominence is unchanged and likely related to the underlying emphysema . Dense atherosclerotic calcification of the aortic knob is identified . IV catheters are noted overlying the left antecubital fossa .
    OUTPUT:
    
No acute cardiopulmonary process . Emphysema .