Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP single view of the chest has been obtained with patient in semi-upright position . Analysis is performed in direct comparison with the next preceding portable chest examination of ___ . It is noted that a chest CT has been performed during this latest examination interval during the late evening of ___ . Comparison of the two portable chest examinations demonstrates the presence of a pigtail ending pleural drainage catheter that has been inserted in the lower left lateral chest wall and projects now with the terminating pigtail end close to the vertebral column , presumably located in the posterior pleural sinus . This finding coincides with a marked increase of the left - sided density resulting in a practically complete left - sided white - out of the chest as identified on this single view examination . No pneumothorax can be identified . Position of previously described right internal jugular approach central venous line is unaltered and the degree of mediastinal shift towards the right also appears unchanged . No new parenchymal abnormalities in the right hemithorax .
    OUTPUT:
    
Marked progression of left - sided pleural and mediastinal densities . Comparison with the findings made during the chest CT examination concern exists that the placed pigtail drainage catheter is not effective . Referring physician , ___ was paged at 1 :35 p .m .