Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size remains mildly enlarged . Mediastinal and hilar contours are unremarkable . The pulmonary vasculature is normal . Subsegmental atelectasis is noted within the lung bases , but no focal consolidation is present . No pleural effusion or pneumothorax is identified . There are no acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary abnormality .