Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable AP radiograph demonstrate interval removal of a a left internal jugular central line . The heart is enlarged though similar in appearance to prior study dated ___ . There is mild to moderate pulmonary edema , increased since prior study . . No focal opacity convincing for pneumonia is identified . There is no large pleural effusion . .
    OUTPUT:
    
Mild to moderate pulmonary edema . No focal opacity convincing for pneumonia .