Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The endotracheal tube is positioned approximately 8 cm above the carina . Per discussion with the ICU nurse , the endotracheal tube was subsequently Re ingested in position more distally . The patient is currently asymptomatic . There is an unusual rounded air density projecting over the mediastinum , just distal to the endotracheal tube . No clear cause for this is identified and it was not present on the earlier study . The lungs are grossly unchanged compared to the prior study . .
    OUTPUT:
    
The endotracheal tube is now positioned approximately 8 cm above the carina however per report , the tube has subsequently been ingested . A 2 cm locule of air projecting over the mediastinum is of unclear etiology . Recommend repeat chest radiographs to evaluate for any interval change .