Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal silhouette and pulmonary vasculature are unremarkable . The lungs are clear . There is no pneumothorax or large pleural effusion . There is unchanged , minimal blunting of the posterior costophrenic angles . Again noted is moderate kyphosis of the thoracic spine , unchanged since prior examination .
    OUTPUT:
    
No acute intrathoracic process .