Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A mild diffuse interstitial abnormality persists , possibly reflecting known airways abnormalities previously imaged by CT . There are no new focal opacities . No effusion and no pneumothorax . The hilar and cardiomediastinal contours are unchanged . There is no pulmonary vascular congestion or pulmonary edema . Chronic deformity of the distal right clavicle is unchanged from prior studies . There is mild compression deformity of two mid-thoracic vertebral bodies , similarly stable . No new fractures are identified .
    OUTPUT:
    
Little change in diffuse interstitial prominence , without new focal parenchymal opacity . Chronic osseous changes involving the distal right clavicle and mid-thoracic vertebral bodies are again noted .