Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable upright chest radiograph demonstrates chronic elevation of the left hemidiaphragm , which now appears more indistinct as a result of small pleural effusions . Changes of CABG , and mediastinal surgical clips are again noted . The pulmonary vasculature appears mildly engorged .
    OUTPUT:
    
Chronic elevation of the left hemidiaphragm , with new small pleural effusions and mild pulmonary edema .