Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A tracheostomy is in - situ , unchanged in appearance compared the prior study . There is a dense opacity projecting over the left heart consistent with retained oral contrast material in the stomach , this is unchanged compared to multiple prior studies . There is persistent atelectasis and scarring throughout the right lung with associated volume loss . There are 2 right - sided chest drains in - situ , unchanged in appearance compared to the prior study . Small left pleural effusion . The left lung is otherwise grossly clear .
    OUTPUT:
    
No significant interval change when compared to the prior study .