Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a known large hiatal hernia . The cardiac silhouette is somewhat enlarged . The aorta is calcified . Left base opacity likely relates to consolidation seen on preceding CT . No large pleural effusion is seen . Bilateral ground - glass opacity may be infection versus pulmonary edema .
    OUTPUT:
    
Large left base opacity worrisome for pneumonia . Diffuse ground - glass opacity projecting over the lung fields may be due to infection versus pulmonary edema . Known large hiatal hernia .