Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is stable cardiomegaly . Prominence of the hilar structures is also unchanged , possibly lymphadenopathy given the patient 's cirrhosis and HIV , conditions which predispose to lymphadenopathy . There is a new increase in opacity in the retrocardiac region , seen better on the lateral view , which could represent developing infection . No pleural effusion or pneumothorax .
    OUTPUT:
    
Increase in opacity in the retrocardiac region , not seen on the prior lateral radiograph from ___ , could represent developing infection .