Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is persistent mild elevation of the right hemidiaphragm . Bilateral perihilar opacities are seen which could relate to fluid overload , however , multifocal infection may be present in the appropriate clinical setting . The cardiac silhouette is top - normal to mildly enlarged . Aortic knob calcification is seen . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Left greater than right bilateral perihilar streaky opacities could be due to infection and / or fluid overload .