Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided dual - chamber pacemaker / AICD with leads terminating in the right atrium and right ventricle is unchanged . Mild to moderate cardiomegaly is re - demonstrated . The mediastinal and hilar contours are unchanged . There is mild pulmonary vascular congestion . No focal consolidation , pleural effusion or pneumothorax is present . There are no acute osseous abnormalities .
    OUTPUT:
    
Mild pulmonary vascular congestion .