Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the prior study , there has been interval placement of right - sided catheter with partial interval decrease in the size of the loculatedpneumothorax at the right lung base . The right hemidiaphragm remains somewhat depressed , but apparently much less so . A small component of the pneumothorax is again seen in the right paratracheal region , also decreased in size . A rind of increased density along the lower edge of the right lung is again noted , similar to the prior study -- question related to compressive atelectasis . The cardiomediastinal silhouette is near midline , with only minimal residual right ward shift . Possible small amount of right pleural fluid . Cardiomediastinal silhouette is grossly unchanged in size in contour . Linear lucency seen adjacent to the descending aorta is unchanged and likely represents artifact as there is no suggestion of pneumomediastinum in this area on the CT images from ___ . Left lower lobe collapse and / or consolidation and small left effusion are also grossly unchanged . There is upper zone redistribution , but doubt overt CHF .
    OUTPUT:
    
1 . Interval placement of tube at right lung base , with improvement of the right base and right medial apex pneumothorax . The degree of tension and an depression of the right hemidiaphragm and right ward shift of the mediastinum appear improved . ( Please note that the initial wet read suggested that the right pneumothorax was unchanged .) 2 . Density at the right lung base likely reflects severe compressive atelectasis --___ to this area on followup films is requested . 3 . Left lower lobe collapse and / or consolidation and small left effusion , grossly unchanged . 4 . Cardiomegaly and mild vascular plethora , without overt CHF , similar to prior .