Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is mildly enlarged . Mediastinal and hilar contours are unremarkable . Minimal subsegmental atelectasis is demonstrated in the left lung base . Pulmonary vasculature is normal . No focal consolidation , pleural effusion or pneumothorax is present . No acute osseous abnormalities demonstrated .
    OUTPUT:
    
No acute cardiopulmonary abnormality .