Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A nasogastric tube terminates within the stomach . The heart appears mildly enlarged , unchanged since the ___ examination . Prominence of the central pulmonary vessels appears improved in comparison to the ___ examination . A persistent left retrocardiac opacity likely represents atelectasis . There is no new edema , focal consolidation , effusion , or pneumothorax .
    OUTPUT:
    
No acute intrathoracic process . Nasogastric tube terminating within the stomach . Mild cardiomegaly .