Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right - sided PICC has been removed . No pneumothorax . There is increased lung volume with interval decrease in the bibasal opacities . No acute focal consolidation . No pleural effusions . Mild cardiomegaly with unfolding of the thoracic aorta .
    OUTPUT:
    
Interval improvement of the left lower lobe pneumonia .