Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison to prior radiograph , there is no overall change . There is thickening of the minor fissure with volume loss in the right lower lobe . There is no pleural effusion or pneumothorax . Cardiomediastinal silhouette is slightly enlarged . The lungs are clear for opacities concerning for infectious process .
    OUTPUT:
    
No evidence of acute process or change since ___ .