Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right IJ central line terminates in the lower SVC . Lung volumes are low . Aside from subsegmental left mid and lower lung atelectasis , the rest of the lung parenchyma is clear . The cardiomediastinal silhouette , hilar contours , and pleural surfaces are normal . There is no pleural effusion or pneumothorax . The elevation of the right hemidiaphragm predates surgery .
    OUTPUT:
    
Subsegmental left mid and lower lung atelectasis without focal consolidation .