Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right PICC line tip not well seen , probably near cavoatrial junction . Increased heart size , pulmonary vascularity , mildly improved . Improved pulmonary edema . Sternotomy . Support devices in place . Mild to moderate left pleural effusion has improved . There is small right pleural effusion , similar to improved .
    OUTPUT:
    
Mild improvement since prior