Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral chest radiographs demonstrate right middle lobe opacity which obscures the heart border . Retrocardiac opacity is best visualized on the lateral view . There is no effusion . The heart is enlarged with prominent vascular congestion . No pleural effusion . No pneumothorax .
    OUTPUT:
    
Cardiomegaly with vascular congestion . Bibasilar opacities , potentially atelectasis noting that infection can not be excluded