Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single AP portable view of the chest was obtained . There has been interval placement of a pigtail right - sided chest catheter with subsequent re-expansion of the right lung and significant reduction in the right pneumothorax which is now small . Right mid to lower lung atelectasis is seen . There may be a small right pleural effusion . There is elevation of the right hemidiaphragm which may be due to underlying right base and / or right middle lobe collapse . The left lung is clear . There is no left pleural effusion or evidence of pneumothorax on the left . The mediastinal silhouette is more wide as compared to the prior study but likely relates to AP portable technique , change in patient position and lower lung volumes . Cardiac silhouette is not enlarged . VP shunt is again partially imaged projecting over the right hemithorax .
    OUTPUT:
    
Interval placement of right - sided chest catheter with subsequent re-expansion of the right lung and significant interval decrease in the previously seen large right pneumothorax which is now small . Right lung atelectasis with possible partial collapse of the right middle lobe and there is subsequent elevation of the right hemidiaphragm . There may be a small right pleural effusion . Elevation of the right hemidiaphragm can be seen in right lung collapse , however , can also be seen with subpulmonic effusion or intra-abdominal fluid .