Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal silhouette is unchanged as compared to prior dated ___ . Note is made of healed right clavicular fracture . Linear opacity in right lower lung is unchanged since ___ radiograph . No pleural effusion or pneumothorax is seen .
    OUTPUT:
    
No radiographic evidence to explain fever , sweats , or cough for 2 weeks