Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and mitral valve replacement . A left - sided dual - chamber pacemaker device is noted with leads terminating in the right atrium and right ventricle , unchanged . Moderate cardiomegaly persists . There is perihilar haziness with vascular indistinctness compatible with mild pulmonary vascular congestion . Lung volumes are slightly decreased compared to the prior exam . No focal consolidation , pleural effusion or pneumothorax is identified . No acute osseous abnormalities seen .
    OUTPUT:
    
Mild pulmonary vascular congestion .