Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear unchanged . There is a patchy opacification in the left basilar region , but similar to prior examinations and suggesting the combination of a prominent epicardial fat pad and minor atelectasis or scarring . Otherwise the lungs appear clear , but noting that lateral views are limited by soft tissue attenuation and motion .
    OUTPUT:
    
No definite evidence for acute disease .