Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . There is mild bibasal atelectasis . The heart appears mildly prominent likely in part due to AP technique . Mediastinal contour is unremarkable . No pneumothorax or large effusion . Bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
Mild cardiomegaly . Mild bibasilar atelectasis .