Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac , mediastinal and hilar contours are unchanged . Pulmonary vascularity is normal . Minimal right basilar patchy opacity likely reflects atelectasis , and blunting of the right costophrenic angle appears chronic , likely due to either a small pleural effusion or pleural thickening / scarring . There is no pneumothorax . No acute osseous abnormality is identified .
    OUTPUT:
    
No interval change from the prior exam without acute cardiopulmonary abnormality .