Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single AP upright portable view of the chest was obtained . Known right aortic arch and right mediastinal vascular graft are again seen , stable in appearance . The cardiac silhouette is grossly stable . There is minor left basilar atelectasis . No definite focal consolidation is seen . No large pleural effusion is seen . There is no evidence of pneumothorax .
    OUTPUT:
    
Left basilar atelectasis without definite focal consolidation to suggest pneumonia .