Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette is mildly enlarged and is accompanied by pulmonary vascular congestion and increase in basilar interstitial opacities . Additionally , a confluent right infrahilar opacity is new . There are no pleural effusions or acute skeletal findings .
    OUTPUT:
    
1 . Mild CHF . 2 . Confluent right infrahilar opacity , which could reflect either asymmetrical edema or developing infection . Followup radiograph may be helpful in this regard . 3 . Worsening basilar lung opacities , probably due to interstitial edema superimposed upon known chronic airways disease . Attention to this area at the time of followup chest x-ray is recommended as well .