Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right IJ , ET tube , and NG tube with the side port are in acceptable positions and are unchanged . Mild cardiomegaly is unchanged . Superimposed on pre-existing pulmonary edema are bilateral asymmetric opacities worse on left , improving on the right .
    OUTPUT:
    
Symmetric opacities concerning for pneumonia with superimposed pulmonary edema .