Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes with bronchovascular crowding . Atelectasis is again seen in the left lung base . The lungs are otherwise clear . Cardiomediastinal silhouette is unremarkable . There is no pneumothorax or pleural effusion . Degenerative changes are seen in the spine .
    OUTPUT:
    
No acute cardiopulmonary process .