Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volume is low . Airspace opacities are identified in bilateral lungs with lower lobe and central predominance . There is no pleural effusion or pneumothorax . Cardiac silhouette is exaggerated by low lung volumes .
    OUTPUT:
    
Diffuse airspace opacities in bilateral lungs are concerning for wide spread multifocal pneumonia . Differential also includes metastasis and sarcoidosis .