Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a moderate to large left and small right pleural effusion . It has demonstrated interval enlargement of the left effusion when compared to previous exam . There is pulmonary vascular congestion . Enlarged right hilum is unchanged from prior CT . Cardiac silhouette can not be assessed . Dense atherosclerotic calcifications noted in the thoracic aorta . No acute osseous abnormalities .
    OUTPUT:
    
Bilateral pleural effusions larger on the left than on the right with interval slight enlargement on the left since last month 's exam .