Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded without opacities concerning for pneumonia or inflammatory process . Linear atelectasis in the left lung base is present . Cardiomediastinal and hilar contours are unremarkable . There is no pleural effusion pneumothorax . No rib fractures are identified .
    OUTPUT:
    
No evidence of acute cardiopulmonary process . No rib fractures are identified . However , this is a suboptimal exam for detection of rib fractures . If there is high clinical concern dedicated rib views should be performed .