Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . Lung volumes are low with bibasilar atelectasis noted . No convincing evidence for pneumonia or edema . No large effusion or pneumothorax . The heart appears relatively normal in size . Mediastinal contour is unremarkable . The imaged bony structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
Basilar atelectasis without acute abnormalities .