Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are mildly hypoinflated . No focal consolidation , pleural effusion or pneumothorax is seen . Linear atelectasis is noted in the the left lung base . The heart size is normal , and the mediastinal and hilar contours are normal . No acute osseous abnormality is seen . Mild degenerative changes of the mid-thoracic spine is seen .
    OUTPUT:
    
No acute cardiopulmonary process .