Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A frontal upright view of the chest was obtained portably . A tracheostomy is in standard position . There is no change from 9 : 54 a .m . in linear lucencies adjacent to the left trachea , compatible with pneumomediastinum . Subcutaneous air in the left neck is stable . Bilateral opacities are unchanged . No pneumothorax . Right Port - A - Cath ends in the lower SVC .
    OUTPUT:
    
No change from 9 : 54 a .m . in pneumomediastinum and bibasilar opacities . Findings discussed with Dr . ___ by phone at 3 :30 p .m . , ___ .