Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again noted are bilateral diffuse airspace opacities throughout the left lung and right lung base . These appear slightly more consolidative than prior . There is no pleural effusion or pneumothorax . Heart size is top normal .
    OUTPUT:
    
Bilateral airspace opacities , slightly increased from prior . Differential includes pneumonitis , asymmetric pulmonary edema or infection .