Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a right - sided PICC which terminates in the mid SVC . The heart size is normal . The hilar and mediastinal contours are normal . Note is made of subtle increase in consolidation at the left retrocardiac lung base . No large pleural effusion or pneumothorax . The visualized osseous structures are unremarkable .
    OUTPUT:
    
Slight increase in consolidation at the left lung base , which could be secondary to an atelectasis ; however , an acute infectious process can not be excluded .