Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded with subtle improved irregular interstitial pulmonary opacities . The cardiomediastinal silhouette is normal . No pleural effusion or pneumothorax is present . A healed right seventh rib fracture is noted , unchanged . The vertebral body heights are preserved .
    OUTPUT:
    
1 . No acute intrathoracic process . 2 . Improved non-specific interstitial abnormalities .