Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: An endotracheal tube tip terminates approximately 3 .4 cm from the carina . An enteric tube tip appears to course below the left diaphragm , off the inferior borders of the film . A left internal jugular vascular sheath is kinked within the level of the neck , and tip is within the region of the low internal jugular vein . Heart size remains moderately enlarged . The lung volumes remain low . Widening of the mediastinum is unchanged , and may reflect low lung volumes with supine AP positioning . Crowding of bronchovascular structures is present with mild pulmonary vascular congestion . Atelectasis is seen in the left lung base . No large pleural effusion or pneumothorax is detected on this supine study . There are no acute osseous abnormalities .
    OUTPUT:
    
1 . Endotracheal and enteric tubes appear to be in standard positions . 2 . Left internal jugular vascular sheath is kinked at the level of the neck , and tip is within the low left internal jugular vein . 3 . Low lung volumes with possible mild pulmonary vascular congestion and bibasilar atelectasis . 4 . Unchanged widening of the superior mediastinum which may be due to low lung volumes and technique .