Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal silhouette and pulmonary vasculature are unremarkable . Again seen are calcified right hilar lymph nodes and subtle interstitial markings in the right upper and lower lung unchanged since ___ , unchanged since the prior examination . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No acute intrathoracic process .