Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Prominence of the interstitium is thought to reflect changes of chronic lung disease , as there is no convincing evidence for pulmonary edema . There is no pleural effusion or pneumothorax . No focal airspace consolidation worrisome for pneumonia . The cardiac silhouette is mildly enlarged , but unchanged . There is no free air seen underneath the diaphragm .
    OUTPUT:
    
No acute cardiopulmonary process .