Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs were provided . The endotracheal tube is in the mid trachea , approximately 3 .2 cm from the carina . Nasogastric tube courses below the diaphragm within the stomach . Support device overlies the lung fields , obscuring view . There is no evidence of pneumomediastinum . The lungs are clear without focal consolidation , pleural effusion or pneumothorax . The cardiomediastinal silhouette is normal . The imaged upper abdomen is unremarkable .
    OUTPUT:
    
No evidence of pneumomediastinum to suggest esophageal perforation , although please note that this study is not the most sensitive for evaluation of this entity .