Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is mild vascular cephalization and interstitial edema but focal opacities concerning for pneumonia . A chronic moderate left - sided pleural effusion associated with left lower lobe collapse is unchanged . Calcified right hilar lymph nodes are noted . The heart is mildly enlarged . Atherosclerotic calcifications at the aortic knob are present . No pneumothorax .
    OUTPUT:
    
1 . Mild pulmonary edema . 2 . Stable chronic moderate left sided pleural effusion with left lower lobe collapse .