Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right - sided Port - A - Cath is again seen , terminating at the cavoatrial junction / proximal right atrium . There are bilateral interstitial opacities which may be due to moderate pulmonary edema , although atypical infection is not excluded . No large pleural effusion is seen . There is persistent mild elevation of the right hemidiaphragm . No evidence of pneumothorax is seen . The cardiac silhouette remains top normal . The mediastinal contours are stable .
    OUTPUT:
    
Prominence of the interstitial markings suggests moderate pulmonary edema ; however , atypical infection is not excluded in the appropriate clinical setting .