Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable supine chest radiograph provided . The NG tube courses into the left upper abdomen , with its tip excluded from view . The tip of the endotracheal tube resides approximately 2 .2 cm above the carina . Lung volumes are low . No large consolidation or supine evidence of pneumothorax or effusion . The heart and mediastinal contour appears grossly unremarkable . No definite bony abnormalities are seen .
    OUTPUT:
    
Tubes and lines positioned appropriately .