Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate cardiomegaly is not substantially changed in the interval . The mediastinal contour appears similar with atherosclerotic calcification noted in the aortic knob . Mild pulmonary edema is not substantially changed compared to the previous examination . Linear opacities in the right mid lung field and right lung base likely reflect areas of atelectasis . Small bilateral pleural effusions are demonstrated with patchy opacities in both lung bases , potentially atelectasis . No pneumothorax is present . There are mild to moderate degenerative changes seen in the thoracic spine .
    OUTPUT:
    
Moderate cardiomegaly with mild pulmonary edema and small bilateral pleural effusions . Patchy opacities within the lung bases may reflect atelectasis but infection is not excluded .