Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is atelectasis at the lung bases . No focal consolidation is identified . There is mild cardiomegaly with tortuosity of the descending thoracic aorta . There is no pleural effusion or pneumothorax . No definite rib fracture is identified .
    OUTPUT:
    
1 . Bibasilar linear atelectasis . 2 . Mild cardiomegaly . 3 . No definite rib fracture identified . If indicated , dedicated rib films of the area of tenderness may be obtained .