Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left lower lobe consolidation is new since the prior study , obscuring the left hemidiaphragm . An associated small left pleural effusion may be present as well . There is no pneumothorax or pulmonary edema . Heart size is stable . The right lung is grossly clear .
    OUTPUT:
    
Left lower lobe consolidation is new , possibly aspiration given reported recent history of emesis . Pneumonia can not be excluded .