Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison to the chest radiograph obtained 3 hours prior , there are new opacities projecting over the left lung and silhouetting the left heart border , likely atelectasis of the lingula with associated leftward mediastinal shift and elevation of the left hemidiaphragm . The right lung is fully expanded and clear . No pleural effusions . No pneumothorax . An ETT , right IJ central venous catheter , left IJ central venous catheter , enteric tube , and VP shunt appear unchanged and appropriately positioned .
    OUTPUT:
    
New , left lung atelectasis and lingular consolidation suggest recent aspiration or new airway obstruction .