Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size appears at least mild to moderately enlarged , but exact size is difficult to determine given the presence of a moderate to large left pleural effusion . There is mild pulmonary edema with perihilar haziness and vascular indistinctness . Atherosclerotic calcifications are noted within the aortic arch . Left basilar atelectasis is demonstrated . No pneumothorax is present . Degenerative changes are seen involving both acromioclavicular joints as well as throughout the imaged thoracolumbar spine .
    OUTPUT:
    
Mild pulmonary edema with moderate to large left pleural effusion and left basilar atelectasis .