Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No pleural effusion or pneumothorax is seen . Perihilar opacities may be due to pulmonary vascular congestion although underlying infectious process is difficult to exclude in the appropriate clinical setting . The cardiac silhouette is mildly enlarged . The aorta is tortuous .
    OUTPUT:
    
Bilateral perihilar and infrahilar opacities most likely related to pulmonary vascular congestion / mild pulmonary edema ; however , underlying infection is difficult to exclude in the appropriate clinical setting . Cardiomegaly .