Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal silhouette is within normal limits . There is a slight asymmetric fullness of the right hilus with subtle opacification extending inferiorly over the right lower lung . This is unchanged compared to prior examination of ___ , but of unclear etiology . Lungs are otherwise clear . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
1 . No definite evidence of consolidation or significant change compared to the prior examination . 2 . Asymmetric fullness of the right hilus warrants evaluation with CT .