Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild cardiomegaly is stable compared to exams dated back to ___ . The hilar and mediastinal contours are normal . Note is made of mild left basilar atelectasis . There is no large pleural effusion or pneumothorax . The visualized osseous structures are unremarkable .
    OUTPUT:
    
No acute intra-thoracic abnormalities identified .