Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate cardiomegaly is unchanged . Pacer leads are in stable position . Hemodialysis catheter terminates in the right atrium , unchanged . The lungs are essentially clear , and the right lung base is partially obscured by the overlying pacemaker generator . Prosthetic valves and sternal wires are unchanged . Blunting of left costophrenic angle likely indicates a small pleural effusion .
    OUTPUT:
    
1 . Stable moderate cardiomegaly and a likely small left pleural effusion . 2 . Hemodialysis catheter terminating in the right atrium .