Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable supine radiograph through the chest demonstrates an endotracheal tube terminating 4 .9 cm above the level of the carina . Lung volumes are low with associated atelectasis . Heart size is within normal limits . No large pleural effusion is identified . An enteric tube descends in uncomplicated course , it s tip not imaged . The aorta appears tortuous . No definite pneumothorax is visualized on this supine portable radiograph however technique is suboptimal . Lungs are clear with no focal opacity convincing for pneumonia . No pulmonary edema .
    OUTPUT:
    
Status post endotracheal tube placement , in appropriate position . No definite pneumothorax though suboptimal technique .