Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Semi supine portable chest radiograph demonstrates an enteric tube which appears to descend the thorax in an uncomplicated course and terminates in a post pyloric position . Lungs are clear without a focal opacity convincing for pneumonia . Interstitial abnormality is exaggerated by low lung volumes . Cardiomediastinal and hilar contours are normal . There is no pneumothorax or pleural effusion . No evidence of pulmonary edema .
    OUTPUT:
    
No opacity convincing for pneumonia . Post pyloric enteric tube .