Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Tracheostomy tube remains in place in standard position , and cardiomediastinal contours are stable . Bibasilar opacities are similar on the left and slightly improved on the right . A focal opacity adjacent to minor fissure is also unchanged . Small pleural effusions are again demonstrated , left greater than right . Pneumomediastinum is evident , similar to the previous study , and there is no evidence of pneumothorax .
    OUTPUT:
    
1 . Persistent pneumomediastinum . 2 . Bibasilar opacities , improved on the right , similar on the left . 3 . Unchanged pleural effusions .