Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear unchanged . There is no pleural effusion or pneumothorax . The lungs appear clear . Nodules mentioned in the prior CT report are not discernable on radiographs . Streaky left basilar opacity suggests minimal atelectasis .
    OUTPUT:
    
No evidence of acute disease .