Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear unchanged including bilateral hilar prominence , particularly on the right , where it may partly reflect atelectasis associatd with marked relative elevation of the right hemidiaphragm . Opacification of the left costophrenic sulcus suggests minor atelectasis , although small coinciding pleural effusions are difficult to exclude . There is no pneumothorax .
    OUTPUT:
    
No definite evidence of acute cardiopulmonary disease .