Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The contour abnormality in the left mediastinum obscuring the main pulmonary artery and descending thoracic aorta is again noted but slightly less prominent . As previously stated this could reflect a mediastinal fluid collection or pseudoaneurysm . There is mild pulmonary edema decreased compared to prior study and a similar right parenchymal opacity . The right internal jugular sheath is unchanged . There are bibasilar chest tubes . No pneumothorax is noted . Again noted is a right calcified hilar lymph node .
    OUTPUT:
    
Slightly less conspicuous contour abnormality of the left mediastinum to which continued attention followup should be paid .