Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Lung volumes are low . Mild left basal atelectasis noted . No convincing evidence for pneumonia or edema . No large effusion or pneumothorax . Heart size is normal . Mediastinal contour is normal . Bony structures are intact .
    OUTPUT:
    
Mild left basal atelectasis . Otherwise unremarkable .