Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Severe cardiac enlargement is again demonstrated . A left - sided AICD is again noted with leads terminating in the regions of the right atrium and right ventricle , unchanged . Mediastinal and hilar contours are similar and there is no pulmonary vascular congestion . Linear opacity in the right lung base likely reflects atelectasis . Linear opacities within the right mid lung field are chronic , and likely reflect areas of scarring . No focal consolidation , pleural effusion or pneumothorax is present . Chronic deformity of the right first rib is again noted .
    OUTPUT:
    
No acute cardiopulmonary abnormality .