Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is normal . The aorta is mildly tortuous and demonstrates mild atherosclerotic calcifications of the aortic knob . Mild prominence of the pulmonary arteries bilaterally may suggest mild pulmonary arterial enlargement . Pulmonary vasculature is normal . No focal consolidation , pleural effusion or pneumothorax is present . Minimal atelectasis is noted in the lower lobes bilaterally . There is diffuse demineralization of the osseous structures .
    OUTPUT:
    
No acute cardiopulmonary abnormality .