Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Supine portable AP view of the chest provided . The tip of the endotracheal tube resides approximately 3 .9 cm above the carina . The NG tube courses into the left upper quadrant . There is left subclavian central venous catheter with its tip in the mid SVC . Lung volumes are markedly low . There is no large consolidation or definite signs of effusion or pneumothorax . The heart size appears grossly unremarkable . No definite bony abnormalities are seen .
    OUTPUT:
    
NG and left subclavian central venous catheter positioned appropriately .