Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right - sided Port -A - Cath is stable in position . Since the prior study , there has been significant interval increase in bilateral perihilar opacities worrisome for moderate pulmonary edema . Underlying infectious process is not excluded . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
Interval significant increase in bilateral perihilar opacities concerning for moderate pulmonary edema ; underlying infectious process not excluded .