Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mildly enlarged . The aortic arch is calcified . The descending aorta also shows patchy calcification . The cardiac , mediastinal and hilar contours appear unchanged . Streaky right basilar opacities are associated with a moderate persistent relative elevation of the right hemidiaphragm , not significantly changed and suggesting minor associated atelectasis . Streaky left basilar opacification obscuring the left costophrenic sulcus also suggests minor atelectasis , likewise unchanged . There is no definite pleural effusion or pneumothorax .
    OUTPUT:
    
No evidence of acute disease .