Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The bilateral parenchymal opacities are likely secondary to edema but may be due to accelerated interstitial disease . There largely unchanged . Moderate cardiomegaly is unchanged , as are the pulmonary vasculature and mediastinal contours . Right Port - A - Cath terminating at the cavoatrial junction and left pacemaker continuous lead in the right ventricle are unchanged .
    OUTPUT:
    
Largely unchanged bilateral parenchymal opacities , likely secondary to edema but may be due to accelerated interstitial disease .