Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate low lung volumes . Bibasilar linear opacities likely represent atelectasis . No pleural effusion is present . Hilar and mediastinal silhouettes are unchanged . Mild tortuosity of the descending aorta is again noted . Heart size is normal . There is no pulmonary edema . Pacemaker leads project over right atrium and right ventricle . Port - A - Cath tip projects over distal SVC . No pneumothorax .
    OUTPUT:
    
No evidence of acute cardiopulmonary process . Bibasilar linear opacities likely represent atelectasis .