Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral chest radiograph demonstrates stable cardiomediastinal silhouette . There is slight hyperexpanded lungs with flattening of bilateral diaphragms consistent with underlying emphysema . Reticular opacities in the lower lobes bilaterally are noted . No opacity convincing for pneumonia is identified . There is no evidence of over pulmonary edema . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Emphysematous changes without focal opacity convincing for pneumonia . Reticular markings at the bases bilaterally while atypical in distribution for emphysema appear unchanged relative to prior examination . These could be due to chronic interstitial process or potentially atypical infection .