Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Streaky bibasilar opacities most likely represent atelectasis . There is otherwise no focal consolidation , pleural effusion or pneumothorax . Heart size is mildly enlarged . Thoracic aorta is partially calcified . Median sternotomy wires are intact . ICD biventricular pacing device is in standard position . .
    OUTPUT:
    
Bibasilar linear atelectasis . No acute cardiopulmonary process .