Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since ___ , new mild diffuse bilateral opacities are seen with increased retrocardiac atelectasis , possibly representing pulmonary edema although superimposed pneumonia can not be excluded . The bilateral hila appear enlarged , which may be seen in sarcoidosis . Moderate cardiomegaly is unchanged . Right PICC line terminates in the SVC atrial junction . No pneumothorax .
    OUTPUT:
    
1 . New mild diffuse bilateral opacities and retrocardiac atelectasis may represent pulmonary edema although superimposed pneumonia can not be excluded . 2 . Enlarged bilateral hila may be seen in sarcoidosis .