Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is slightly enlarged , possibly exaggerated by AP positioning . The mediastinal contours demonstrate calcified atherosclerotic disease of aortic knob and a mildly tortuous aorta . The lungs demonstrate mildly heterogeneous parenchyma with vascular congestion . Prominence of the interstitial markings is more prevalent on the left with more subtle airspace consolidation at the right base . Small bilateral pleural effusions are present . There is no pneumothorax . Additionally , the left PICC courses across midline into the right brachiocephalic vein .
    OUTPUT:
    
1 . Mild cardiomegaly with mild interstitial edema and small bilateral pleural effusions ; subtle left lower lobe airspace opacity . The findings most likely represent mild pulmonary edema with a superimposed left lower lobe pneumonia . Comparison with prior imaging may be helpful . 2 . Left PICC tip in right brachiocephalic vein ; this finding was discussed with IV nurse ___ by ___ at 9 :45 am on ___ .