Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hypoinflated . Right mid lung linear atelectasis or scarring is noted . Left lung base subsegmental atelectasis is also present . There is no pneumothorax . The heart size is suboptimally assessed due to low lung volumes . The mediastinum is not widened . Multilevel spinal degenerative changes are present .
    OUTPUT:
    
Left lung base subsegmental atelectasis . Right mid lung linear atelectasis or scarring . No radiographic evidence of pneumonia .