Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Except for minimal bibasilar atelectasis , the lungs are clear . Mild cardiac congestionis stable . Cardiac contour is normal . The upper mediastinum appears widened due to the lordotic view . Chest CT in ___ only showed mediastinal fat in this region .
    OUTPUT:
    
There is no evidence of pneumonia .