Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right internal jugular catheter is in - situ , this is been withdrawn somewhat compared to the prior study . But still appears low , likely in the right atrium . This could be withdrawn a further 2 cm for better positioning within the SVC . Lung volumes remain low which may be contributing to this appearance . Left basilar atelectasis has progressed slightly compared to the prior study . The airspace opacity seen previously is less conspicuous on the current study .
    OUTPUT:
    
1 . Progressive left basilar atelectasis , superimposed infection can not be excluded . 2 . The right internal jugular catheter has been withdrawn somewhat but could be withdrawn a further 2 cm for better positioning within the SVC .