Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post esophagectomy and gastric pull - through accounting for the widened right mediastinal contour . Heart size is difficult to assess but likely remains at least mildly enlarged . A moderate sized pleural effusion has increased in size compared to the previous chest radiograph . Pulmonary vasculature is not engorged . Left basilar opacification likely reflects compressive atelectasis but infection is not excluded . New focal patchy opacity is demonstrated within the medial left upper lobe . No pneumothorax is present . There are multilevel degenerative changes in the thoracic spine .
    OUTPUT:
    
Increased size of left pleural effusion , now moderate in size . Left basilar opacification likely reflects compressive atelectasis but infection is not excluded . New focal patchy opacity in the medial aspect of the left upper lobe is concerning for infection .