Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . The patient is status post esophagectomy and gastric pull - through at , with no significant interval change in the appearance of the mediastinum compared to the prior radiograph . Heart size is normal . Hilar contours are unremarkable , with no evidence of pulmonary edema . There is blunting of the right costophrenic sulcus , suggestive of a trace effusion , but no pneumothorax is identified . Left lung is clear . There are no acute osseous abnormalities . No free air is seen under the diaphragms .
    OUTPUT:
    
Minimal blunting of the right costophrenic sulcus suggests a trace pleural effusion . Otherwise no acute cardiopulmonary abnormality otherwise identified . No free air under the diaphragms identified .