Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Median sternal wires are intact . Heart size is moderately enlarged . Linear opacities lung bases likely reflect atelectasis . There is no pleural effusion or pneumothorax . No definite displaced rib fractures appreciated .
    OUTPUT:
    
1 . Mild bibasilar atelectasis , but no focal consolidation . 2 . Moderate cardiomegaly . 3 . No obvious displaced rib fracture .