Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are mildly overinflated , similar to the prior . The cardiomediastinal silhouette and pulmonary vasculature are unremarkable . Known numerous subcentimeter nodules are not well appreciated on the current examination , and are better seen on comparison CT . There is no focal consolidation . Minimal bibasilar scarring is unchanged . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No acute intrathoracic abnormality .