Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Median sternotomy wires are in similar position . Interval development of mild pulmonary vascular congestion . There is also new ill - defined opacities in the lower lobes bilaterally , and lingula . Moderate cardiomegaly is again seen . Small left - sided pleural effusion . No pneumothorax .
    OUTPUT:
    
New mild pulmonary vascular congestion . There is heterogeneous basal and lingular opacities likely represent multifocal infection .