Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A tracheostomy tube is in - situ , with the tip abutting the tracheal wall . A right - sided subclavian Port - A - Cath terminates in the mid SVC . A left - sided internal jugular catheter terminates in the proximal SVC . Lung volumes are very low with significant bilateral lower lobe atelectasis . This results in crowding of the pulmonary bronchovascular structures limiting assessment . No worsening consolidation seen .
    OUTPUT:
    
A tracheostomy tube is in - situ , with the tip abutting the tracheal wall . Lung volumes are very low with significant bilateral lower lobe atelectasis .