Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is normal . The mediastinal and hilar contours are unremarkable . The pulmonary vasculature is not engorged . Minimal patchy opacity is demonstrated within the right lung base . No pleural effusion or pneumothorax is present . No acute osseous abnormality is demonstrated .
    OUTPUT:
    
Patchy right basilar opacity may reflect atelectasis however infection or aspiration is not excluded in the correct clinical setting .