Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . The previously seen diffuse lung opacities have significantly decreased in the interval with possible residua seen in the bilateral lower lobes . No large pleural effusion is seen . There is no pneumothorax . The cardiac silhouette remains enlarged . Subtle peripheral right upper lobe linear opacity may relate to scarring .
    OUTPUT:
    
Significant interval decrease in previously seen bilateral pulmonary opacities with some opacity remaining in the bilateral lower lung fields .