Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral images of the chest demonstrate no evidence of pneumomediastinum or other complication associated with esophageal perforation . The lungs are well expanded . Pulmonary and cardiac exam are unchanged from previous imaging . There is mild cardiomegaly again seen . There is no focal consolidation , pleural effusion , or pneumothorax .
    OUTPUT:
    
No evidence of esophageal perforation on this chest radiograph . Otherwise , unchanged chest radiograph .