Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright radiograph through the chest demonstrates intact median sternotomy wires . Surgical clips project over the left upper mediastinal border . An enteric tube descends in the thorax in a uncomplicated course , its tip which projects over the left upper quadrant in the presumed location of the gastric lumen . Heart size is normal . Hilar and mediastinal contours are within normal limits . No opacity convincing for pneumonia is present . Streaky opacity at the left lung base is most consistent with atelectasis . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Enteric tube ends in the lumen of the upper stomach , below the diaphragm . No acute intrathoracic abnormality .