Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is persistent blunting of the right costophrenic angle , seen since at least ___ which could be due to a small pleural effusion , however , given chronicity , may relate to pleural thickening . The cardiac silhouette remains mildly enlarged . Evidence of a hiatal hernia is again seen . Right paratracheal opacity without indentation on the adjacent trachea is again seen and grossly stable . Large hiatal hernia with air - fluid levels seen on the lateral view . No focal consolidation or pneumothorax . Mediastinal contours are stable with calcification of the aorta seen .
    OUTPUT:
    
Chronic blunting of the right costophrenic angle . Large hiatal hernia . No focal consolidation or other significant change from the prior study .