Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were provided . Lungs appear clear , though volumes are low . Calcified lymph nodes are present , as seen on prior . No pleural effusion or pneumothorax . The cardiomediastinal silhouette is stable . Bony structures are intact .
    OUTPUT:
    
No acute intrathoracic process .