Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with ___ , I would doubt significant interval change . Heart size is at the upper limits of normal and the cardiomediastinal silhouette is unchanged . Possible slight retraction of both hila is again noted , unchanged . Minimal biapical pleural thickening / scarring is again noted . No CHF , focal infiltrate or effusion is identified . Minimal subsegmental atelectasis and / or scarring at the right base is unchanged . No pneumothorax detected . No free air seen beneath the diaphragms . Again seen is an indwelling catheter with tip at the cavoatrial junction .
    OUTPUT:
    
No acute pulmonary process identified . In particular , no focal infiltrate to suggest infection . No significant change compared with ___ .