Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Marked cardiomegaly appear slightly increased compared to the previous chest radiograph . The mediastinal contour remains similar with rightward deviation of the trachea at the level of the aortic knob . Mild pulmonary vascular congestion is noted , and the hilar contours are unchanged . Lungs appear hyperinflated with probable underlying emphysematous changes . A moderate left and small right pleural effusions are noted . Patchy opacities in the lung bases may reflect areas of atelectasis , though infection or aspiration can not be excluded . Diffuse increase in interstitial opacities bilaterally may reflect slight progression of previously noted chronic interstitial abnormality . No pneumothorax is present . Scarring is noted within both lung apices . Mild to moderate degenerative changes are noted in the thoracic spine .
    OUTPUT:
    
1 . Marked cardiomegaly , increased from the previous study , with mild pulmonary vascular congestion and bilateral pleural effusions , moderate on the left and small on the right . 2 . Patchy bibasilar airspace opacities may reflect atelectasis though infection or aspiration can not be excluded . 3 . Background of mild chronic interstitial abnormality , perhaps progressed since the previous chest radiograph from ___ .