Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a patchy retrocardiac opacity which appears similar to perhaps slightly improved . A patchy right mid lung opacity appears new since the prior study , concerning for bronchopneumonia . Although perhaps less likely , a heterogeneous predominantly right - sided pattern of mild pulmonary congestion could be considered . The pulmonary vascularity is mildly prominent . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Persistent patchy retrocardiac opacity , similar to slightly improved . New right mid lung opacity concerning for pneumonia in the background of slightly prominent pulmonary vascularity suggesting pulmonary venous hypertension . Although probably less likely , mild asymmetric pulmonary congestion could also be considered .