Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is within normal limits . The mediastinal and hilar contours are unremarkable . There are new bilateral lower lung opacities predominantly in the lower lobes , more extensive on the left than right , suggesting pneumonia . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Findings suggesting multifocal pneumonia . Follow - up radiographs are recommended to show resolution within eight weeks .