Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal , pleural and pulmonary structures are unremarkable . There is no pneumothorax , consolidation or pleural effusion . Bibasilar atelectasis is noted . The diaphragms are flattened consistent with obstructive lung disease . Mild degenerative changes of the thoracic spine are present .
    OUTPUT:
    
No acute cardiopulmonary process .