Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . Subtle bibasilar opacities are noted concerning for pneumonia , increased on the left . No large effusion or pneumothorax . Cardiomediastinal silhouette appears normal . No acute bony abnormalities .
    OUTPUT:
    
Subtle opacities in the lower lungs concerning for multifocal pneumonia .