Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild basilar atelectasis is seen . There is no focal consolidation , pleural effusion , or evidence of pneumothorax . Cardiac silhouette is top - normal . Mediastinal contours are unremarkable . There may be partial fusion of 2 posterior ribs , seen on the lateral view .
    OUTPUT:
    
No acute cardiopulmonary process .