Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to chest radiographs from the same day , mediastinal drain and left chest tube have been removed . No large pneumothorax . The appearance of the lungs with low lung volumes and basilar opacities have not significantly changed . Mild to moderate cardiomegaly .
    OUTPUT:
    
No large pneumothorax post chest tube removal .