Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral upright views of the chest were obtained . Compared to the most recent study there has been interval improvement of focal left lower lung consolidation which could represent residual pneumonia or superimposed atelectasis . The right - sided subclavian PICC line is unchanged in location and ends in the upper portion of the inferior vena cava . The bones and soft tissues are unremarkable .
    OUTPUT:
    
Interval improvement of left - sided pneumonia . Residual left lower lung consolidation could be residual pneumonia or superimposed atelectasis .