Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac , mediastinal and hilar contours are unchanged , and within normal limits . Atherosclerotic calcifications are noted at the aortic knob . Pulmonary vasculature is not engorged . Atelectasis and scarring is seen within the medial right lung base , without focal consolidation . No pleural effusion or pneumothorax is present . No acute osseous abnormalities demonstrated .
    OUTPUT:
    
No acute cardiopulmonary abnormality .