Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is at the upper limits of normal size . The mediastinal and hilar contours appear unchanged . There is no pleural effusion or pneumothorax . There is a slight interstitial abnormality with peribronchial cuffing , but somewhat less prominent . This could be seen with slight fluid overload or pulmonary vascular congestion , but inflammation of lower airways or perhaps infection could also be considered in the appropriate clinical setting . Moderate osteophytes are noted along the lower thoracic spine .
    OUTPUT:
    
Slight interstitial abnormality , perhaps reflecting vascular congestion versus an inflammatory or potentially infectious process involving lower airways , but improved .