Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided pacemaker device is noted with leads terminating in the right atrium and right ventricle . The heart size is mildly enlarged . The mediastinal contours are unremarkable . Patchy ill - defined opacities are noted within the upper lobes , right more so than left , which are nonspecific but may reflect areas of infection . Mild perihilar haziness as well as small bilateral pleural effusions is compatible with mild pulmonary vascular engorgement . No pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
Patchy opacities in the upper lobes , more so on the right , may reflect areas of infection . Mild pulmonary vascular congestion with small bilateral pleural effusions .