Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single AP upright portable view of the chest was obtained . There is mild bibasilar atelectasis . No focal consolidation , pleural effusion , or evidence of pneumothorax is seen . The previously seen small left pleural effusion was only appreciated on the lateral view and the lateral view was obtained today . The cardiac and mediastinal silhouettes are stable and unremarkable .
    OUTPUT:
    
No acute cardiopulmonary process .