Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal radiograph of the chest demonstrates unchanged position of support devices since the prior study . There may be some slight interval improvement in the previously seen left pleural effusion . The heart size remains enlarged . There is bilateral basilar atelectasis which is unchanged . There is no pneumothorax , focal consolidation , or significant pulmonary edema .
    OUTPUT:
    
Slight interval improvement in previously seen left pleural effusion . Otherwise , unchanged since the prior study .