Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable semi supine view of the chest . An endotracheal tube is seen within the trachea with its tip positioned 2 .9 cm above the carina . Lungs are clear . Cardiomediastinal silhouette appears normal . Bony structures are grossly intact .
    OUTPUT:
    
No acute intrathoracic process