Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the prior radiograph , there has been interval removal of left chest tube and right internal jugular catheter . The sternal wires are unchanged in appearance . There is no evidence of pneumothorax or pleural effusion . There has been improvement in the right basilar opacity with persistence of left basilar opacity which likely represents atelectasis . Lung volumes are unchanged . Of note , there is mild increase in the caliber of the left mediastinum with two separate densisities along the left heart border , possibly indicating fluid accumulationg in the mediastinum .
    OUTPUT:
    
No pneumothorax . Left mediastinal fullness which may indicate fluid accumuation . Recommend close radiographic follow up or CT scan to establish baseline evaluation of the mediastinum . The ACS team was paged at 1130 AM , by Dr . ___ , on the day of the examination . Findings and next diagnostic options were discussed over the telephone with Dr . ___ .