Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Bilateral diffuse centrally - distributed opacities which likely reflect cardiogenic edema are mildly improved compared to the most recent studies . Moderate cardiomegaly is seen and unchanged from previous studies . The right PICC line is unchanged in position with tip terminating at the cavoatrial junction . No pleural effusions or pneumothorax are seen . Single lead transvenous pacemaker is seen with the lead terminating in the right ventricle .
    OUTPUT:
    
Mildly improved bilateral diffuse centrally - distributed opacities which likely reflect cardiogenic edema .