Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac , mediastinal and hilar contours are normal . Pulmonary vasculature is not engorged . Patchy opacity in the right lung base may reflect atelectasis , however infection is not excluded . Left lung is clear . No pleural effusion or focal consolidation is demonstrated . There is no pneumothorax . No acute osseous abnormalities seen .
    OUTPUT:
    
No acute cardiopulmonary abnormality .