Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with prior radiographs on ___ , there has been interval placement of the left chest pacemaker , with leads terminating in the right atrium and right ventricle . Overall lung volumes are low . A moderate right - sided pleural effusion is stable from prior There is no new focal consolidation . No pneumothorax is seen . There is borderline cardiomegaly , unchanged from prior . .
    OUTPUT:
    
Interval placement of a pacemaker , with leads terminating in the low right atrium and right ventricle .