Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac size is mildly enlarged . The hilar and mediastinal contours are normal . An area of atelectasis is seen in the left lower lung base . There are lower lung volumes . There are no pleural effusions or pneumothorax . The right PICC line tip is at the level of the mid SVC . Visualized osseous structures are grossly unremarkable .
    OUTPUT:
    
1 . Right PICC line tip at level of mid SVC . 2 . Atelectasis of the left lower lobe . In the appropriate clinical setting , this may represent pneumonia .