Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right chest wall triple lead pacing device is again seen as well as a dual lumen right - sided central venous catheter . Prosthetic mitral valve is noted . Degree of cardiomegaly is unchanged . Persistent mild pulmonary edema is again noted . Retrocardiac opacity may be accentuated by portable technique , grossly unchanged from prior . There is no large effusion . Old healed left lateral rib fractures identified .
    OUTPUT:
    
Persistent mild pulmonary edema . More confluent retrocardiac opacity potentially due to atelectasis accentuated by portable technique . Consider PA and lateral if patient is amenable to further characterize .