Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Heart size is accentuated , but likely within normal limits . The mediastinal and hilar contours are unremarkable . Atelectatic changes are noted within the left lung base . No focal consolidation , pleural effusion or pneumothorax is clearly noted . There is no pulmonary vascular congestion . Partially imaged is cervical spinal fusion hardware .
    OUTPUT:
    
Left basilar atelectasis .