Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: ET tube , transesophageal tube , and the chest tubes have been removed . There is no pneumothorax . There is mild pulmonary vessel congestion , slightly increased from prior . Left lung base atelectasis is unchanged . Cardiomediastinal silhouette has normal postop appearance . Sternotomy wires are intact .
    OUTPUT:
    
No evidence of pneumothorax .