Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without focal consolidation . No pleural effusion or pneumothorax is present . The cardiac and mediastinal silhouettes are unremarkable . Pulmonary vasculature is not engorged . Multilevel degenerative changes of the thoracic spine noted .
    OUTPUT:
    
No acute intrathoracic process .